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.

Useful links:

https://www.nationaljeweler.com/diamonds-gems/grading/9435-why-guebelin-wants-us-to-talk-about-gemstones-like-wine

https://www.gubelingemlab.com