List of gemstones

A number of gemstones have gained fame, either because of their size and beauty or because of the people who owned or wore them. A list of famous gemstones follows

Aquamarines

• The Giant Aquamarine

Diamonds

Emeralds

The Gachala Emerald is one of the largest emeralds in the world at 858 carats (172 g)

• The Chalk Emerald
• The Duke of Devonshire Emerald
• The Gachala Emerald
• The Mackay Emerald

Opals

• The Andamooka Opal, presented to Queen Elizabeth II, also known as the Queen's Opal
• The Aurora Australis Opal, considered to be the most valuable black opal
• The Black Prince Opal, originally known as Harlequin Prince
• The Empress of Australia Opal
• The Fire Queen Opal
• The Flame Queen Opal
• The Flamingo Opal
• The Halley's Comet Opal, the world's largest uncut black opal
• The Jupiter Five Opal
• The Olympic Australis Opal, reported to be the largest and most valuable gem opal ever found
• The Pride of Australia Opal, also known as the Red Emperor Opal
• The Red Admiral Opal, also known as the Butterfly Stone

Pearl

• 
  
Arco Valley Pearl
• The Pearl of Lao Tzu
• Satlada - A seven-stringed pearl necklace of the Nizams.

Ruby

• The DeLong Star Ruby
• The Hixon Ruby Crystal
• The Midnight Star Ruby
• The Neelanjali Ruby
• The Rajaratna Ruby
• The Rosser Reeves Ruby

Sapphires

• The Logan sapphire
• The Queen Marie of Romania Sapphire
• The Ruspoli Sapphire
• The Star of Asia Star Sapphire
• The Star of Bombay, given to Mary Pickford by Douglas Fairbanks, Sr
• The Star of India, the largest and most famous star sapphire in the world
• The Stuart Sapphire
• The Black Star of Queensland, with a weight of 733 carats

Spinels

• The Black Prince's Ruby, actually a spinel mounted on the Imperial State Crown
• The Samarian Spinel, the world's largest spinel
• The Timur Ruby, believed to be a ruby until 1851

Topaz

• The American Golden Topaz, the largest cut yellow topaz weighing nearly 23000 carats (4.6 kg).