Rare stone

Opal cutter and carver Justine Buckley holds a 92-carat Lightning Ridge black opal

Painite is a very rare borate mineral. It was first found in Myanmar by British mineralogist and gem dealer Arthur C.D. Pain who misidenti...

Anyone interested in geeking out on rare, natural minerals and stones will want to head directly to the Wilensky gallery, located in New York City’s Chelsea arts district. Aside from presenting these pieces as one would art, Wilensky has dedicated itself to holding a number of exhibitions as well. This fall, the gallery will host “Magnificent Emeralds:…

Want to impress your friend with your rock knowledge? Here are 30 types of rocks that you ought to know to get you started.

What is the Peace Diamond, and how will its sale by auction on December 4, 2017 save countless lives? Learn more about this unique diamond here.

Lapis lazuli, a rare, deep blue gemstone. Lapis lazuli is a complex mineral containing a mixture of blue lazurite (sodium aluminium silicate), white calcite (calcium carbonate) and small amounts of other minerals.

Diamonds which have not yet been cut are referred to as 'rough' or 'raw' diamonds. To identify whether the stone you have is a diamond, you can do a quick visual evaluation to rule out other gemstones. From there, you'll want to perform a...