GIA 0.37ROUNDEIFNONVGEXEX
This diamond is a 37-cent round diamond, GIA certificate, color E, clarity IF (flawless, the highest in the market), no fluorescence, cut VG, symmetrical, polished EX (sorry that the cost price cannot be disclosed). The cutting is one grade worse than you, and the color and cleanliness are three grades higher.
The market price of this bare stone should be around 7-8 thousand (online shop, not specialty store), and yours should be above 6,000 and below 6,500.
"What do they have in that ring? Is it really the brand of Cartier Chow Tai Fook? " Of course it's not a real brand, it's all imitations. Generally, the unique styles of various manufacturers are patented (there is a time limit, such as not allowing the production of the same model within six months).