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- 5 min
Gemology: O is for ...
Obsidian is a natural black, variegated black, red, or orange volcanic glass formed from cooling lava. It's been used by people for many
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- 1 min
Gemology: N is for ...
There's not a lot we can say about gemstones beginning with N because there really aren't many! Sure, there are regionally named var
10
- 4 min
Gemology: M is for ...
We've reached the halfway point of our Gemology guide! This week we bring you gemstones beginning with M... Mabe Pearls, Malachite, Marc
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- 2 min
Gemology: L is for...
Lapis Lazuli is technically not a gemstone. It's a composition of up to 15 other minerals all fuzed together. Lapis Lazuli is famous for
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- 3 min
Gemology: J is for ...
Jade is actually two different minerals, Jadeite and Nephrite, that are very similar in appearance and feel. Both have been used for millenn
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