Citrine is the yellow-to-brownish-orange variety of Quartz, SiO2, with natural material relatively rare and much of the modern market consisting of heat-treated Amethyst. Explore its mineral science, treatment history, modern...
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Explore Ametrine, the naturally bicolored quartz variety combining amethyst and citrine zones. Learn its mineral science, Bolivian source history, modern metaphysical traditions, care, and ways to work with it.
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