Buddha Bhatta’s “Ratna Pariksha” an ancient treatise on the science of testing gemstones, as mentioned in Kautilya’s “Arthashastra” published between 323 and 299 BC, was used in ancient times to control the trade on pearls, diamonds and colored gemstones. Hence, the first grading system for diamonds, pearls and colored gemstones was developed by ancient Indians [...]
Source: https://news.internetstones.co…on-agency-alcumus-isoqar/
