Monthly Archives : January 2017

Gemstone Hardness & Durability

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Hardness is a physical property of Gemstones. Hardness is the resistance or surface strength of the stone against scratches. Hardness defines the durability of the Gemstone, the ability to retain its Surface Finish & Polish. Moh’s scale is a relative and not an absolute scale and mainly referred to compare the hardness of gemstones. This Scale rates Hardness of minerals…

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Confused between Citrine (Sunela), Yellow Topaz & Yellow Sapphire (Pukhraj)

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Most of People get confused between similar looking stones like Citrine, Yellow Topaz & Yellow Sapphire.  In Fact all three stones are completely different, with just one similarity of color. All there have different Physical, Optical & Chemical properties as listed in table below. Yellow Sapphire is the hardest and most durable among all three. Yellow sapphire is also more…

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Gemstone Weight Calculations

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Worldwide the standard unit used for weighing diamonds and gemstones is metric carat. It takes its name from the carob seeds, these seeds have a fairly uniform size and were used by early gem traders as counterweights in their balance scales. The modern metric carat was adopted by the internationally in 1913 and today a carat weighs exactly the same in every…

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