The more common variety of Citrine found on the market is the characteristic lemon-yellow to orange-yellow stones created by heating Amethyst crystals to a high temperature. Crystals and minerals are used to high temperatures within the Earth, so this heating does not damage them. It does change their energies, however-particularly the frequencies of visible light energy they carry. Once these Amethyst crystals are heated, they become what is marketed as ‘Citrine’. These stones have a very different energy from natural Citrines and should really be considered a different mineral, in regard to their applications in healing and metaphysical work. For the purpose of this writing, I’ll call this variety ‘Common Citrine’.