Can the Amethyst crystals create, emit or amplify infrared rays?
Some physics say "no" , it will be a violation of the Law of conservation of energy. They are completely true in physics terms. But only if we see the crystals as an isolated system.
If the system is open, and the external power is applied, the crystals will certainly emit energy.
Amethyst (like any other gems used in the hot stone practices) of course is not the source of infra-red heat itself. The crystals cannot produce power from nowhere.
There should always be an external source of power applied to the stones. For example they can be heated with electricity or wood fire (like in Pizza Stove), by sun or by hot water. Then amethyst absorbs this heat energy in wide wave length range and starts to emit infrared rays in the most powerful delivery of the frequencies Far and Mid-Infrared Light waves.
The words "conductor" and "converter" are more appropriate. The term "amplifier" is also correct because the waves of FIR and MIR lengths may be isolated and amplified. The stone can absorb the heating energy of wide length waves range and then emit it. Even if the emission is some lower in the absolute value (as per physic, some energy will be lost), it is not a problem because we can apply any level of energy by heating it more.
Why Amethyst is called "superconductor" ? Of course not in the physics meaning of this term. This word here outlines the ability of the crystal to emit waves really valuable for human body. Most parts of the Amethyst waves are in a narrow FIR and MIR range same as the natural body warmth. And though the total emission power can be less than absorbed but in this FIR and MIR range it maybe higher.
The whole Far Infrared Sauna technology is based on this idea. The panels made of stones (Amethyst, Tourmaline, Jade) or yellow clay, ceramic, carbon or charcoal are charged with standard electric heating power until they start to emit Far Infrared Rays.
So, of course if you put two crystals close to each other , they will not amplify rays of one another until they burst. But if you heat them by electric stove or sun light, they will start to emit valuable healing infrared heat.
How the Amethyst heating process works for us?
Some people call it a "bio-resonance" and explain by an example of touching a large bell with a single finger. A bell has an inherent number of vibrations when it is touched or struck. When the bell is struck at a regular interval, it causes vibrations and it begins to move. When the energy used to activate the bell is increased, the vibrations between molecules strengthen and the electronic energy increases. Mechanical energy is transformed to vibrations.
Amethyst Healing Power is effective even without external heating. The electric heating source just strengthens the natural strength of Amethyst adding the warming benefits. How can it be? Easy, the body is the source of infrared heat itself. Some parts of your body are warmer than others (sometimes because of inflammation or other diseases). When you cover your body with Amethyst mat or fabric, first the crystals absorb the heat energy from the warmer zones, then the amethyst starts to emit and redirects your own body heat back to the colder zones. The result is temperature normalization, soothing and feeling better!