The largest gem-quality aquamarine crystal mined to date is 19 inches long.
Like emerald, aquamarine is a color variety of the mineral beryl.
Aquamarine is mined at high elevations in Pakistan’s Karakoram Mountains.
Color: greenish blue, light in tone
Refractive index: 1.577 to 1.583
Birefringence: 0.005 to 0.009
Specific gravity: 2.72
Mohs Hardness: 7.5 to 8.0
The name “aquamarine” is derived from two Latin words: aqua, meaning “water,” and marina, meaning “of the sea.”
It has been said that the mineral beryl gives the wearer protection against foes in battle or litigation. It makes the wearer unconquerable and amiable, and also quickens the intellect.
Aquamarine is the birthstone for March.
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The patron of romantic love wore an amethyst ring carved with the image of Cupid.
Leonardo Da Vinci
The artist wrote that amethyst quickens intelligence and gets rid of evil thoughts.
Single amethyst crystals can be huge: the GIA Museum displayed a doubly terminated crystal that weighed 164 pounds.
Refractive Index: 1.544 to 1.553
Specific Gravity: 2.66
Mohs Hardness: 7
Because of its wine-like color, early Greek legends associated amethyst with Bacchus, the god of wine. Other legends reflected beliefs that amethyst kept its wearer clear-headed and quick-witted in battle and in business affairs. Because amethyst was associated with wine, it was believed that wearing amethyst prevented drunkeness.
Fine amethysts have been set in religious jewelry and royal crown jewels for ages. It was once considered equal in value to ruby, emerald, and sapphire. It’s no wonder that fine amethyst adorns the fingers of bishops as well as the coronation regalia of British royalty.
Amethyst is the birthstone for February and one of the emblems of the twelve apostles.