Physical Qualities of Ametrine Ametrine is a mix of both amethyst and citrine, and can be either natural, or artificially manufactured through heat treatment. Virtually all naturally occurring ametrine is found in Bolivia, hence it is sometimes known as bolivianite. It occurs in either typical quartz crystal form, or in massive form. The colors of both purple and yellow/orange are distinctly separated in their individual zones within ametrine; the difference is due to the iron ions within experiencing different zones of radiation exposure during the formative process. Like quartz, ametrine has a Mohs hardness of 7. The color banding differences
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Archives for citrine
Citrine – The merchant’s stone
Citrine is a member of the quartz family that is colored pale yellow to a deep golden brown. The color is such due to the presence of iron in the crystalline content. In some pale yellow varieties, the color can be so pale, that it can even be mistaken for colorless quartz or a light colored version of smoky quartz. Most citrine being sold on the market is in fact, heat treated amethyst. So, that means, the citrine you now hold in your hands, is in all probability, an amethyst-turned-citrine! There is reason to believe many citrine crystals sold on
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