Ereada® FIR Gemstone Mat Professional 73"L x 29"W
Ereada Corp is an American company based in Avon, Connecticut and specializing in high-end products from jewelry grade natural Amethyst gems.
Our company focuses on Amethyst and mixed Gemstone mats and other luxury wellness products.
Our products are built for consumer use but with the parts and components of industrial grade. The mats are great for both home use and professionals. They are built to last and even many of the earliest models made by our manufacturer almost 20 years ago are still operative.
Brown artificial luxury eco-leather FIR Gemstone Mats are artisan built with mesh tubes infused with a blend of natural tumbled Gems that may include: Amethyst, Garnet, Agate, Jade; other colorful types of Natural Quartz and Chalcedony and several types of Tourmaline, Yellow Mud, White Clay, Ochre Ceramic Micro Spheres.
Ereada Gemstone Professional Size Mat is featured with Permanent Static Magnets and Pulsed Magnetic Fields Coils (PEMF) quickly restoring the natural electrical field and totally recharging our body and mind.
- CRYSTAL RAYS DEEP FIR HEAT
- HOT STONE NEGATIVE IONS
- STATIC MAGNETS
- PULSED MAGNETISM COILS (PEMF)
- AIR IONS
Ereada® Gemstone Mat PROFESSIONAL (PRO)
|Mat Surface||Brown Eco-leather, crystals are fixed by special mesh fabric|
|Weight (mat only without controller)||31 lb (14.1 kg)|
|Gemstones||Tumbled 3-9 mm size 100% Natural Certified Gemstones. This multicolor variety of gems includes Purple Amethysts, Garnets, Red Agates, Green Chalcedony and other stones. All Gems are Grade “A” and higher, Chemically Untreated, Natural Color, Non-painted, Non-irradiated|
|Total Gems Weight||15 lb (6.8 kg)|
|Ceramic Spheres||2-3 mm Multicolor Ceramic Balls pressed from micronized Natural minerals and baked at high temperatures up to 1300°C to remove all impurities. Compositions include the powdered Natural minerals, ores and stones including Tourmaline, Germanium, Elvan, Ophiolite, Volcanic Rock, White Clay, Red and Yellow Ochre, Charcoal, Gold Ore and Yellow Mud|
|Ceramics Weight||8 lb (3.6 kg)|
|Temperature Range (7 levels)||86 ~ 158°F (30 ~ 70°C) adjustable temperature|
|Mat total area size||73 x 29 inches (186 x 72 cm)|
|Heating area||59 x 26 inches (152 x 65 cm)|
|Heating Power Consumption||240 Watts|
|Rated Voltage||AC 110v / 60hz|
|Static Magnets quantity||12 pcs in the lower part of the mat|
|Static Magnetic field intensity||300 gauss|
|VLF PEMF (Rapid Very Low Frequency Pulsation Magnetic) Intensity||100-400 gauss|
|VLF PEMF Power Consumption max||20mA / 20W|
|PEMF Coils||3 pcs in the upper part of the mat|
|Magnetic pulsation frequency||8-60 per second|
|Controller||Ventilated controller with timer, VLF PEMF, Air Ion and AUTO EMI function|
|Made by registered facility of||Hyundai Co, Korea|
|Set includes||The Mat, controller, carry and storage bag, waterproof protector cover pad with 3-D air mesh and user guide|
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The main part of the Ereada® Gemstone Mat 16 layers system is a thick layer of colorful varieties of natural gemstones and tourmaline ceramic spheres forming all the surface of the mat and releasing far infrared rays and negative ions.
Professional size of Ereada® Mat is the most popular model 29 inches wide and 73 inches long, perfect for almost all users for whole body experience.
It fits a standard massage table and also is large enough for all night sleep.
Ereada® Gemstone Single Mat is equipped with 7 intensity levels adjustable in the range between 86°F and 158°F ( 30°C - 70°C ) electromagnetic fields free double silicon Titanium electrical heating system.
High quality ventilated overheat proof auto controller enables you to set the heating temperature level and session time, activate magnetic pulsation and air ions.
The mat emits far and mid infra-red rays with 92% efficiency in the most body absorbable wave length range between 4 and 20 microns. This infra-red light of crystal rays penetrate 6-8 inches (15-20 cm) deep.
Ereada® FIR Gemstone Mat PRO is equipped with 300 gauss static magnets and pulsed magnetic wave or PEMF with pure sine wave and up to 400 gauss intensity.
Ereada Gemstone Mat uses the highest quality most precise in the industry BiMetal heat sensors to control heating functions within the different layers of the mat.
The mat generates anions through special layers and directly conduct them to the body. The function is active always when the mat is ON.
Ereada mat is ideal to create natural stress-free environment for well-being and to feel renewed and reenergized. Many customers find it effective for beautification, relaxation and healthy lifestyle pursuits.
Ereada® mats help to maintain nurturing environment and encourage activity which complements the powers and energies within our body and mind to promote and overall healthy style and support optimal comfort and happiness.
The beautiful visually appealing wave design shows all beauty of multi-color crystals variety under the durable mesh fabric.
It is the original quality product, made in Korea by GMP, ISO, CE and local KFDA registered facility of Hyundai Co Ltd to be distributed in the U.S. exclusively by our company Ereada Corp.
We started as users ourselves and highly appreciated the benefits of precious natural stones and heat. We also noted some design shortage, technical faults and especially the excessive prices for the mats available in the market.
The strong wish to make these products more convenient and affordable to share our positive experience with our relatives, friends and all other people encouraged us to start this business.
We do our best to provide our clients with the highest quality products at the best price in the market. Please, check our website for other types of Amethyst infra-red heating mats, pads, pillows and other luxury products.
Ereada Mat is a long life product built to last. It comes with a full one year warranty. Our customer support service will always respond within 24 hours or less 7 days a week.
NO MATTER HOW OLD YOU ARE, IT IS GOOD TIME TO REVIVE YOURSELF IN THE DAYTIME AND RELAX WITH A GOOD ALL-NIGHT SLEEPING!
Click on the BUY button now while supplies last!
Note: Ereada® mats are great for general wellness. They may awaken the restfulness, comfort and invigoration powers and energies and can become an important part of your healthy lifestyle. Ereada® mats may help supplement your lifestyle but neither Ereada® mats nor any information on https://Ereada.com or on linked websites or literature, on labeling or in printed materials are not intended to diagnose, cure, treat, mitigate, or prevent any disease, illness or medical condition or to substitute medical treatment or advice of any kind or to affect the structure or any function of the body. Please, see Legal Disclaimer page for more information.
WHY CHOOSE EREADA
Picking the right solution may be an overwhelming task.
Why buy from us instead of competitors?
These are the top 10 reasons to choose Ereada® Mat.
1. Ereada® are original quality mats manufactured in Korea
- Unlike many other products in the market, our Ereada® mats are manufactured in Korea, where they were invented.
- The mat is the ORIGINAL QUALITY product built with the original heavy-duty long lasting parts and with almost 20 years in the markets. Not a cheap imitiation just coming to the market.
- Only Richway Biomat and Ereada® mat are manufactured in Korea. Almost all other products (including those of rather good quality) are really made in China.
- Production cost in Korea is much more expensive then that of the brands outsourcing production in China. But we chose the manufacturer using the best parts and comparing qualities not prices.
2. Ereada® mats really work for wellness no matter how old you are!
- Ereada@ reenergizing crystal mats are helpful for everybody willing to accumulate the powerful and harmonious energy of life. It complements active lifestyle and supports well-being.
- The mat reveals crystals' powers and brings natural forces into your home. It provides a restful and calming setting in the middle of the modern civilization.
- Ereada@ Mat creates an energized and comfortable environment to feel inspired and happy, infuse spirit and boost creativity.
- The mat is great complement to massage, yoga and reiki. It helps to balance chakras' activity and clean their channels, ideal to supplement qigong practices and «chi» energy flows.
- Ereada@ Mat provides comfortable setting to relax while you meditate, seek mental clarify or all-night sleeping.
- The mat envelops with soothing and relaxing warmth. Each session can help you feel invigorated and optimistic about your day.
- Gemstone and amethyst mattresses and pads can be a great part of a routine to help you make wellness and balance part of your lifestyle.
3. SAFE AND DURABLE LIFETIME PRODUCT
- Our products are very durable as they are built with industrial grade materials such as the most expensive and reliable low EMF twisted Titanium mulit-wire heating systems with double silicon and Teflon insulation.
- Many customer use the mat daily and it is always better to entrust your health to the safest and most relaible device. Our mats are equipped with both types of EMFs elimination and intersepction systems to keep magnetic waves on less than 0.5-2 mG level and electric waves on less than 1-10 V/m level.
- Ereada® mats are suitable for heavy duty professional use.
- All products are traceable. Each item has the serial number kept in our database.
- Ereada® mats estimated life is more then 10 years and many mats made by our manufacturer almost 20 years ago are still in use. It reaches the best industrial standards and significantly exceeds the life expectancy of the hot stone mats made in China which are recommended for occasional home use only.
4. Only 100% natural unpainted, non-chemically treated gems
- Gemstones used in our mats are 100% natural unpainted, non-irradiated and chemically untreated. They are certified and double tested by Korean Gemological Institute and CHA Gem Laboratory.
- We are experts especially in the Amethyst products but we have also mixed Gemstone mats featured with different blends of Natural Semi-Precious Crystals.
- This multicolor variety of gems may include Purple and Red Amethysts, Jade, Garnet, Red and Green Agates, Jasper, Tourmaline and other colorful types of Natural Quartz and Chalcedony from all over the world. Several types of special Bio Ceramic Spheres made of Tourmaline, Germanium, Elvan, White Clay, Charcoal, Gold Ore and Yellow Mud are added to multiply the effects.
5. Ereada® mats have great value and affordable price
- Ereada® mats are much heavier then those mats of the same size offered by other suppliers and usually produced in China. Our mats have thicker layers and contain 30-50% more of Amethyst and other gems per mat then other brands of the same size to generate more InfraRed Heat and anions.
- Our mats sets include in the box the free waterproof protector covers with 3-D air mesh pads to protect your mat and make your sessions or sleeping more comfortable
- Family owned business structure, own brand and direct online sales to customers allow us to keep low operating expenses passed as savings on to our customers. We provide our clients with the highest quality long life products at the best values in the market.
- We offer FIR Amethyst mats directly to the customers at our Ereada.com, not through MLM or distribution channels to avoid middleman margins.
- We do not make any health claims for our crystals mattresses and we do not market them as medical devices. All Ereada@ mats are sold as home use consumer products and though their quality is the same or better than that of the other well known brands made in Korea, our financial burden is lower and it is converted into the lower prices for our customers.
6. Negative Potential functon makes Ereada® distinctive
- The natural voltage of healthy cells is about -70 millivolts. A big advantage of Ereada mats is that in addition to Negative ion emission layers, our Rich Brown Amethyst mats (Midsize and bigger) and some of Rich Brown and Gemstone Mini Mats are equipped with an advanced Negative Potential (N.P.) generation system called also Electrical Discharge of Negative Ions (E.D.N.I).
- N.P. creates Electrostatic Field with 600 volts of Negative Potential converted at low speed into DC energy through the special Silver Fiber layer. It converts the mattress into a bath of anions into which you can sink your whole body.
- Negative Potential function helps to support the potential and the natural electrical fields. It is the most powerful technology for inducing the negative ions in the amounts sufficient to alkalize.
- N.P. function is available only in the Rich Brown Ereada® mats manufactured in Korea by Hyundai and in Richway BioMats ( E.D.N.I. ). Ereada® mats are the only ones with this function installed into the mini mats 20x32 and midsize mats 24x59 inch.
- Negative Potential generation acts synergistically together with the Negative Ion function in maintaining the natural electrical potential level and providing multiple benefits known by practitioners and therapists. It is also important that N.P. is included into our mat for a small fraction of the cost of the special Negative Potential devices.
7. MORE THEN HOT STONE MATS. ADDITIONAL MAGNETISM and PHOTON functions.
- Ereada® mats are technology rich products with up to 20 different layers. They have optional Static "Bio-Magnetism" Feature and Photon 660 nm Red Light LEDs.
- Ereada® Amethyst mats of Purple and Gemstone mats are fequipped with powerful 300 Gauss Permanent Magnets and Copper Coils.
- Purple Ereada@ mats have built-in visible Red Light LEDs for "Bio-Stimulation" Photon Function. These LEDs have 0.2W lighting power each which is 6-10 times higher than those of made in China LEDs.
- We have 3 collections each with mats of 4-5 sizes and matching Amethyst Bio Pillows. It is the widest choice of Korean FIR Gemstone mats ever offered.
8. WORLDWIDE RECOGNITION
- Ereada® mats are made by KFDA, GMP, ISO, CE, TUV certified facilities of Hyundai Medical Co with the longest experience in this field and world recognition.
- The mats were tested and certified in Korea, Japan, Australia, EEC, Mexico, Brazil, Malaysia, China, and many other countries.
- Though we do not make any health claims for our mattresses and we do not market them as medical devices, our manufacturer is registered with the US FDA, Registration. #3004203811, Operator Number: 10047851.
- FDA registration does not mean that FDA has tested or approved the devices for treatments of any medical conditions. But it does mean that the manufacturer is following the high quality standards for medical device production and other U.S. FDA rules.
- Note: Ereada® mat can become an important part of your daily activity and general wellness regimen and supplement your healthy lifestyle. It may help to create relaxing or reenergizing environment awakening the restfulness, comfort and invigoration powers, energies and inner forces. Ereada® mats are not intended to diagnose, cure, treat, heal, mitigate, or prevent any disease, illness, symptom or medical condition, or to substitute medical treatment of any kind or to affect the structure or any function of the body. Any information on https://Ereada.com or on linked websites or literature, on labeling or in printed materials of Ereada Corp are not intended to diagnose, cure, treat, heal, mitigate, or prevent any disease, illness, symptom or medical condition or to substitute medical advice of any kind.
9. RISK FREE PURCHASE AND POLICY WARRANTY
Ereada® Mat is a quality product built to last. But our main target is 100% customer sutisfation. Your purchase from Ereada® is protected with a risk free purchase policy and a full one year warranty with free shipping.
RISK FREE PURCHASE POLICY
We understand that such purchase is a big investment and so we do our best to provide our customers with a Risk Free protection. In case the mat does not work for you, you do not feel benefits, or for any reason you are not satisfied, you can return the mat within 30 days after the delivery date. You will be responsible for shipping. If protectors, covers or other disposable parts were used, your return may also be subject to restocking fees up to 15%. Please, check our full Shipping and Return Policy here.
WARRANTY WITH FREE SHIPPING
- We provide a full one year warranty for Gray and Purple mats against manufacturer’s defects in materials and workmanship from the date of purchase. Brown Classic Ereada mats have 2-years protection.
- If during the warranty period a failure of the mat takes place, we will repair or replace the defective part or the whole mat Fast and Free.
- Both shipping and return shipping are always FREE OF CHARGE for warranty issues.
- If you bought or received as a gift a brand new Ereada® mat an additional up to 5 years home use warranty extention can be purchased.
- After warranty service is fast and reasonable. Replacement parts for standard wear and tear are always available for prompt delivery. Please, check more information about Warranty terms here.
10. CEO Level Customer service and direct e-mail access to buisness owner
- We have strong ethical principles of honest dealing and open business model.
- We share all our knowledge and information for the benefit of all people.
- We personally manage all customer service concerns via email. Our reaction time usually is not more then several hours.
- CEO level customer support allows to solve any problems in fast and effective no hassle way and keeps our awareness and alertness on the top level.
- You always have direct email access to the company founder Andrey Kipor to resolve all issues. Email me at firstname.lastname@example.org any day 24/7/365. I am happy to assist you personally.
COMBINATION OF NATURAL CRYSTALS METAPHYSICAL POWERS, LIGHT AND MAGNETISM ADOPTED BY ALTERNATIVE PRACTICES FOR AGES WITH SCIENTIFICALLY-BASED MODERN FAR INFRARED, ANION, N.P. (E.D.N.I.), AND PHOTON TECHNIQUES BUILDS A BRIDGE BETWEEN EASTERN AND WESTERN TRADITIONS.
Ereada® Mat is a quality product built to last.
It comes with a risk free purchase policy and a one year warranty.
We have very low rate of product returns because usually our customers feel the benefits of hot stones from the very beginning.
But we understand that such purchase is a big investment and so we do our best to provide our clients with a Risk Free protection. In case the mat does not work for you, you do not feel benefits, or for any reason you are not satisfied, you can return the mat within 30 days after the delivery date.
You will be responsible for shipping. If protectors, covers or other disposable parts were used, your return may also be subject to restocking fees up to 15%. If you are not sure that you like the mat, it may be reasonable to keep the origingal box and all accessories and also to avoid using protective pads during the trial period to avoid extra fees. The standard towels work fine as well.
It is a real Risk Free purchase experience!
We provide one year warranty against manufacturer’s defects in materials and workmanship from the date of purchase.
If during the warranty period a failure of the mat takes place, we will repair or replace the defective part or the whole mat Fast and Free.
Both shipping and return shipping are always free for warranty issues.
The warranty is transferable under special circumstances. We stand behind our products, if you get the brand new mat as a gift from the original purchaser. Just be sure to have an original owner purchase proof.
Of course the mats sold on eBay by other sellers are not covered with our warranties. Many of those mats are fake imitations.
Only Ereada Corp sells refurbished almost new mats with the same warranty as for the new mats. These are mainly professionally cleaned and refurbished customer retunrs within 30 days.
After warranty service is fast and reasonable. Replacement parts for standard wear and tear are always available for prompt delivery.
Please, check more information about Warranty terms here
QUESTIONS & ANSWERSAsk a Question
How comfortable are the mats to sleep on?
Thanks for your question.
All Ereada Mats especially PRO and SINGLE size are great for every nights sleeping and many customers use them in this way. The most important is to avoid overheating. These FIR hot stone mats do not work like conventional heating pads or electric blankets. The most part of the mat energy is generated in the form of Far Infrared Rays heat especially on low levels. It is transferred mainly by radiation like sun rays not by conduction like a cup of hot coffee does ( really ceramic cup also radiates infrared heat but with less efficiency and with other wavelengths ). If you put a thick blanket layer on the heating pad or the electric blanket it will isolate the most part of heat. But if you cover the FIR Mat you will lose some portion of conductive heat ( 20-40% depending on mat temperature, lower the temperature, lower the ratio of conductive heat ) but the Infrared Rays will still penetrate through the towels / blankets / covers and even through your body to heat it from inside. FIR Crystal mats do not heat the ambient air surrounding the mat like the standard heating pads which are hotter to touch but do not heat the body so much. Amethyst Mat will only feel warm even on the highest settings and not too hot to your touch, even though the heat sensor might indicate high. Our skin sensors can easily detect the high temperature caused by the standard conduction heat but we feel the effects of radiant Infrared Heat with some retard. The FIR warmth is much more penetrative into the body and provides deeper effect so the mat should be used on much lower "sensible" temperature then the standard heating pads and demands extra care especially for all night use. Especially it refers to bigger size mats which are very powerful and may cause hyperthermia or buzz effects if overused. Please, use the mat only on the lowest setting while sleeping. The standard procedure is to have short before bed relaxing session of about half an hour on levels 3-4 ( of 7 max ) + Negative Potential mode on big mats or 45-50C on mini mats and then decreasing to the lowest levels 1-2 or 30-40C on mini. If these levels cause some buzz feeling or overstimulation, the temperature should be set on the lowest levels or even the mat can be used in unpowered mode. Especially in summer when it can absorb some excessive heat from your body.
The crushed Amethyst and other gemstones though tumbled to eliminate sharp edges really make Ereada Mats stiff and hard. It is great for short term procedure as gives some acupressure benefits but may cause some painful feeling if overused. If you would like to sleep on your mat, it could be great to do it slowly adapting your body to crystals pressure. You can start from shorter sleeps and move forward slowly. It is like acupuncture so no need to overstimulate the body from the very beginning but better to increase intensity of pressure continuously. So it may demand step-by-step increase of the time you lay or sleep on the mat starting from an hour and adding half an hour every second day for example. If you feel pain, it means that you are overdoing. Other way to decrease the pressure from the mat ribs with stones is to use some topper, towels, blankets on the top of the included into the set protector cover to make the mat softer. The most useful part of radiant heat will travel through the mat protector cover and the natural materials ( cotton, bamboo, wool ) topper to your body as well as negative ions. You will have more comfort. If you need then you can take away the extra layers one by one.
Hope this info will be helpful.
What's the difference between the amethyst versus the gemstone mat in terms of benefit?
Jade, Agate, Chalcedony, Jasper, Amethyst used in Ereada Gemstone Mats are all 100% natural semi precious stones. They have similar properties and features but with some differences. Please, check our catalog or google for “healing crystals”. Some folks have different gemstones preferences. Amethyst is considered the main healing stone because when preheated it emits rays in the range from 5 to 14 microns with the most part of emitted energy concentrated at 2 peaks at 7 and 12 microns wavelength. This range is considered bio-compatible and bio-resonance so we use Amethyst as a main crystal for Far Infrared Rays generation. Even in Gemstone Mats the share of Amethsyt in the crystals blend is around 50%. Tourmaline ceramic micro spheres are the best for Negative ion, because we bake them with gold ore, volcanic rocks, yellow clay, ochre, eleven and other minerals to enrich anion emission to the most healthy level of 700-1500 ions.
There is some difference between different types of Ceramic Microspheres used in Ereada Gemstone Mats in FIR heat spectrum and positive effects produced by different compositions. The spheres are pressed from micronized Tourmaline, Gemanium, White Clay or Charcoal nano-powders, Volcanic stones, Yellow Mud, Ophiolite, Elvan, Gold Ore, Ochre and other Natural minerals, ores and stones and baked at high temperatures up to 1300°C to remove all impurities. All of bio ceramic balls emit FIR heat in wider range 4-20 microns and produce a plenty of Negative Ions. Spheric shape provide much better surface and make them more efficient then natural stones for ions production. We have 3 collections of Ereada Mats. EREADA MATS of the same size are 20-30% heavier then other mats in the market. They heat up slower and may be less hot to touch but due to more crystals inside will generate more infrared rays. Compact Pro 24"x59" and bigger mats have the following functions: 1. BROWN AMETHYST MATS: FIR, IONS, N.P. 2. PURPLE AMETHYST MATS: FIR, STATIC MAGNETS, PEMF, PHOTON, IONS, AIR IONS 3. GEMSTONE MATS: FIR, STATIC MAGNETS, PEMF, MORE IONS, AIR IONS BROWN EREADA MATS are classic similar to Richway biomats. Compact Pro 24"x59” and bigger mats produce ions not only by the anion layers inside the mat but also with special silver fiber layer generating High Negative Potential Electrostatic Field by DC 600v. N.P. is considered to be the most efficient for transferring more Negative ions directly into the body cells. It is like a bathtub of ions where you can sink the body laying on the mat. It is similar to Richway E.D.N.I. ( Electrical Discharge of Negative Ions ) very relaxing and soothing. Ereada Brown Mats can generate N.P. for 1 hour together with heating while Richway Biomats can do it only when the mat heating is OFF. PURPLE EREADA MATS and GEMSTONE EREADA MATS have the same powerful ( 400 gauss intensity ) PEMF magnetic pulsation. Each of these mats have additionally 12 pcs of 300 Gauss intensity Permanent Magnets in the hip and leg zone, while more powerful PEMF coils ( 3 modules ) are in the upper part of the body zone. You can change between static magnets and PEMF for your upper or lower body laying with your head towards the logo area or in the opposite direction. PURPLE EREADA MATS have the same photon Red Light 660NM therapy LEDs as on the Purple MediCrystal Mat. Both PURPLE and GEMSTONE MATS do not have N.P. function of the BROWN EREADA MATS. They deliver Negative Ions into the air by special function of controller ( AIR IONS ) and through the skin into the body by the same anion fabric layers as all Ereada Mats. GEMSTONE MATS produce more ions also by ceramic Tourmaline microspheres. it is natural unique feature of Amethyst, Tourmaline and some other crystals to emit FIR radiant heating rays and Negative Ions when they are hot. FIR emission of AMETHYST MATS is 366 W/m2 with min 93% efficiency in the best utilized by the human body wavelength range 5-14 microns; with almost 80% of this energy transferred at two so called “Amethyst Peaks” at 7 and 12 microns. For GEMSTONE MATS it is 372 W/m2 with min 92% efficiency in the wavelength range 4-20 microns; with around 50% of heating energy transferred at two Amethyst Peaks at 7 and 12 microns. There may also be some difference between healing powers of Garnet, Agate, Chalcedony, Amethyst blend with 4 types of Tourmaline Ceramic micro spheres used in GEMSTONE MATS and pure Amethyst effects of PURPLE and BROWN EREADA MATS. Small ceramic balls ( 2-3 mm size ) are pressed from micronized Tourmaline, White Clay or Charcoal nano-powders, Volcanic stones, Yellow Mud, Ophiolite, Elvan, Gold Ore, Ochre and other Natural minerals, ores and stones and baked at high temperatures up to 1300°C to remove all impurities. There may be some slight difference in FIR heat spectrum and positive effects produced by different compositions. All of ceramics emit FIR heat in wider range 4-20 microns. Spheric shape provide much larger surface then that of crushed natural stones and make them more efficient for ions production then Amethyst crystals. EREADA MATS ( bigger then mini mats ) have 7 levels of heat on the controller between 86°F and 158°F. The set or current temperature is not displayed, only the level is shown. It makes controllers more reliable in heavy duty use.