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All About Jewels:
Illustrated Dictionary of Jewelry
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Click on an underlined word for more information on that subject.

SPECIFIC GRAVITY

The specific gravity (abbreviated s.g.) of a material is a comparison of its weight with the weight of an equal volume of water. Specific gravity measures the density of a material.

Substances with a low specific gravity (like cork, which has a s.g. of 0.24) are not very dense; substances with a high specific gravity (like Gold, with a s.g. of 19.3) are very dense.

Substance SPECIFIC GRAVITY
Amber 1.05-1.30
Lucite 1.19
Jet 1.30-1.35
Quartz 1.544-1.533
Topaz 3.5-3.6
Ivory 1.7-2.0
Opal 2.1
Obsidian 2.3-2.6
Lapis lazuli 2.4-2.9
Moonstone 2.56-2.62
Aquamarine 2.67-2.71
Emerald 2.67-2.78
Coral 2.68
Turquoise 2.6-2.8
Amethyst 2.63-2.65
Pearl 2.60-2.78
Nephrite 2.90-3.02
Glass 3.15-4.20
Peridot 3.27-3.36
Jadeite 3.35
Azurite 3.7-3.9
Diamond 3.52
Chrysoberyl 3.70-3.72
Malachite 3.75-3.95
Sapphire 3.99-4.00
Ruby 3.97-4.08
Zircon 3.90-4.71
Hematite 4.95-5.16
Pyrite 5.0-5.2
Tantalite 5.18-8.20
Gold 19.3



All About Jewels:
Illustrated Dictionary of Jewelry
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Click on an underlined word for more information on that subject.
If the jewelry term you are looking for is not in the dictionary, please e-mail me and I'll add it.




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