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Hackmanite
Hackmanite is a rare sulfur-rich variety of sodalite and a tenebrescent mineral, which means that it has the ability to change color when exposed to sunlight. This is a process that reverses when the light changes. This phenomenon is also referred to as reversible photochromism. Hackmanite gems are pale to deep violet when first mined, and fade to grayish or greenish-white once exposed to sunlight. However, hackmanite gems from Afghanistan and Myanmar do the opposite and usually change from colorless or creamy-white to pink-red or violet under sunlight.
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The site had so many different stones and they were very affordably priced
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Good stones and easy to use website
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All is good
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nice collection of jewels at a fair price
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The website is easy to use, and there is a wonderful selection of gem stones to choose from. The prices are reasonable.
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simple, clear, well organized site
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Gems are always measured in Millimeter (mm)

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length x width x depth,
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diameter x depth

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