A gemstone is the name given to a rare or otherwise highly prized mineral crystal. They are often cut and polished to make jewelry, ornaments, and clothes. Gemstones have been sought after by mankind ...

Gemstones are valued based on the Four Cs - color, clarity, cut, and carat. Precious stones include diamonds, sapphires, rubies, and emeralds. Semi-precious stones are evaluated on their rarity and ...