A Beginner's Guide To Gemstones
Gemstone mining itself is an old trade – Lapis Lazuli is thought to have first been mined in Afghanistan around 12,000 years ago. ... This requires the prospectors to find a 'seam' of gemstones, which is a layer of gem-rich material sandwiched between other layers of Earth. These seams rarely run in straight lines or stay at a uniform ...
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