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Density
Density is an important characteristic of any material, whether it is the density of a gemstone, of a gold alloy, or even a human brain.
Density is defined as the ratio of the mass of an object to its volume.
Density should correctly be expressed in units of "unit mass per unit volume", e.g. grams per cubic centimetre. The figure quoted is often the same as that for specific gravity. For those who are unsure what "mass" means, consider it to be the same as "weight", you will not be far out.

Specific Gravity
Specific gravity is defined in Webster's dictionary as the ratio of the weight or mass of a given volume of a substance to that of another substance (usually water for solids and liquids) used as a standard.
Specific gravity is not expressed in units as it is purely a ratio.

Density of gold silver platinum and other jewellery related metals.

Density of Gemstones
The density of each gemstone can be found via our A to Z of Gemstones page.


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