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Chatham® Emerald Gemstone Information.
Information * Loose gemstones * Jewelry links

Emerald is the birthstone for the month of May and the gemstone representing the 20th, 35th, and the 55th wedding anniversary. Emeralds were once prescribed for eye diseases because the green color was believed to be soothing to the eyes. It was also once recommended as amulets to ward off epilepsy in children. Emeralds were known to strengthen the owner's memory, quicken intelligence, and assist in predicting the future. It is known to be a symbol of rebirth and romance.

Click to view AGTA code.

Refractive Index 1.577-1.583
Hardness = 7.5-8 (Moh's Scale)
Specific Gravity =2.72
Species - Beryl
Optic Character - Double Refraction.
Phenomena - Chatoyancy, Asterism (Rare)

Ultrasonic: Risky
Steamer: Never
Heat: Very poor; should never be heated
Chemicals that harm: Hydrofluoric acid

Chatham emerald crystal growth.

Emerald crystal growth.
Image Courtesy Chatham®.

Crystal Structure
Crystal system: Hexagonal (trigonal), hexagonal prisms, columnar.

 January  Garnet
February Amethyst
March Aquamarine
April Diamond
May Emerald
June Pearl/Alexandrite
July Ruby
August Peridot
September Sapphire
October Opal/Tourmaline
November Topaz or Citrine
December Blue Topaz or Zircon
Common Cut Examples.
Chatham round cut emerald image.
Round cut.
Chatham oval shape emerald image.
Oval shape.
Chatham  marquise cut emerald image.
Marquise cut.
Chatham pear shape emerald image.
Pear shape.

Chatham Emerald cut emerald image.
Emerald cut.

Chatham Princess cut emerald image.
Princess cut.
Step cut.

Chatham Straight baguette emerald image.
Straight baguette.

Chatham Trillion cut emerald image.
Trillion cut.
  Chatham heart shape emerald.
Heart shape.


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