Gem stones

The Wittelsbach-Graff Diamond is a 31.06 carats (6.21 g) fancy deep-blue diamond with internally flawless clarity. Laurence Graff purch...

La Peregrina is one of the most famous pearls in the world. Its history spans almost 500 years, and it has passed from the African slav...

It is not known exactly what inspired the name “The Lone Star” for this massive blue star sapphire weighing 9,719.5 carats, discovered i...

The Pearl of Lao Tzu (also referred to as Pearl of Lao Tze) is the largest known pearl in the world. It is not a gem-quality pearl, but...

The Regent Diamond is a diamond which is on display in the Louvre. In 1698, a slave found the 410 carat (82 g) uncut diamond in a Golko...

The Mogul Mughal Emerald is one of the largest emeralds known. Auction house Christie's described it as: The rectangular-cut emer...

The Tiffany Yellow Diamond is one of the largest yellow diamonds ever discovered; it weighed 287.42 carats (57.484 g) in the rough when...