— Recommendations are independently chosen by our editors. Purchases you make through our links may earn us and our publishing partners a commission. Blue Nile Three Row Stacked Pink Sapphire ...

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 ...

A 5.72-carat fancy intense blue diamond sold for more than $8.8 ... The collection was led by a Cartier Art Deco platinum multi-gem and diamond brooch, circa 1914. It consists of a briolette ...