New York-based, upmarket gemstone dealer has created a series of oil paintings entitled "Tree Portraits" that celebrates the ...

Gemstones, including rubies ... Low-quality alexandrite can sell for as little as $100, but high-quality stones can sell for tens of thousands or even hundreds of thousands of dollars.

Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy. After investing tens of thousands of ...

Although both are "made, not mined," moissanite gemstones and lab-grown diamonds are NOT one in the same. Here are some of ...