Tag Archives: ametrine

Rare and Unique, Ametrine

I just returned from the Tucson gem show. While I didn’t post much during my visit, I still took a lot of photos of amazing gemstones and mineral specimens to share with you. In my previous post, I talked about … Continue reading

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Pleochroism vs. Color Zoning

Yesterday, I wrote about pleochroism and how this optical phenomenon is often misinterpreted as color zoning. As I mentioned, pleochroic gems show different colors when viewed from different crystal directions. So as you move the gem around, the same area … Continue reading

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Amethyst Colors

Amethyst is prevalent in sizes from small to large standard calibrated to fantasy shapes. But probably the most significant contributing factor in determining the value of amethyst is its color. Amethyst ranges in color from pale grayish violet in commercial … Continue reading

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