Amethyst - Formation, Properties, Uses - Geology In

Amethyst is a beautiful purple variety of quartz. Its color ranges from light lavender to deep violet, and it can be transparent to transluc

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Amethyst: The most popular purple gem, February birthstone

Amethyst: A Collector's Guide to the Purple Gemstone

Amethyst geode (Serra Geral Formation, Lower Cretaceous; s…

Amethyst - Wikipedia

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Geology Wonders - Amethyst in Basalt with Blue and Pink

Amethyst: Mineral information, data and localities.

9 Properties of Amethyst - Simplicable

Amethyst - Formation, Properties, Uses - Geology In