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Thursday, November 19, 2020
Gübelin Gemstone Rating
The Gubelin Gem Lab has introduced Gubelin Gemstone Rating system based on points, inspired by the system to express the quality of a wine's vintage. The Gubelin Gemstone Rating looks at three factors: quality, rarity and salience. If the consumers and the trade feel it's easy to convey a good story, the new rating system might work.
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