Physical properties of Emerald loose sale price & Emerald Gemstone Information
Emerald, along with other beryls, is quite hard, having a hardness of 71/2 to 8 on Moh's scale, compared with 10 for diamond, 9 for corundum, and 8 for topaz. Hardness is generally a desirable feature is gemstones.
Chemical Composition and Name
Be3Al2(SiO3)6 - Beryllium Aluminium Silicate
7.5 to 8
1.560 - 1.565 to 1.587 to 1.593
2.65 to 2.76
0.005 to 0.009
Other Optical Properties
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Swiss Gem Shop loose Gemstone at Sale price and Gemstone Information