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Ratna Pariksha
Ratna Pariksha is an ancient science on testing gemstones.[1][2] It was used by the Kosadhyaksha (Superintendent of Treasury) and mentioned in Kautilya's Arthashastra in order to control the trade of pearl, diamonds and all the other important gems in antiquity.[3] It classifies gemstones into Maha-Ratna and Upa-ratna (lit. Great Gems and Second Class Gems).[4]
- ^ Mubarak 1978
- ^ Asiatic Society 1848
- ^ Mookerji 1990, p. 364
- ^ Roger Calverley 2007, p. 274
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