1. The certificate is preferably a gia certificate, and it is best to have no national inspection certificate.
2. It is the 4C of the diamond, that is, the size, color and clarity are all cut.
Yours is 0.253, representing 25 points, and one carat is 100 points; Color: d is the best, in order. Your color has turned yellow. Clarity: fl if vvs1vvs2vs1vs2si1si2. You have reached the level of SI, which is relatively poor.
Your ring is worth about 2000 yuan.