Fan CastingBlue Sapphire Gemstone: The September Birthstone
Blue Sapphire gemstone also remembered as Neelam Ratna
by Navratan
Story added by navratangem on June 2, 2022
Properties of Neelam Stone:
Diamond is the only gemstone that has a hardness level of 10 out of 10 on the moh scale of hardness. This precious Blue gemstone comes next only to Diamonds when we talk about the hardness on the Moh's scale of hardness. Neelam stone holds a specific gravity of 3.99 to 4.03 and it is commonly excavated from igneous rocks. Blue Sapphire gemstone has a refractive index that ranges from 1.762-1.770 which makes it optically dense.
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