I can tell you for sure that it is very expensive. Mine is a diamond, which is also 19.5 points. Color I-J, pt950, weight 2.58 seems. 5500 feels expensive after the discount. I don't know the clarity and deadline of less than 20 minutes. I have no idea. I went to Daimengde again and saw 23.5 points in the same paragraph as me. The color is the same as mine, the clarity is vs, and the cutting is not bad. 18k Kgold ring is 300 cheaper than mine. I feel lost. I said I wanted to change it. I don't need to return the extra 300. I won't change it anyway.