Chow Tai Fook's diamond ring 32 -point chromaticity D, clarity SL1, cutting everything is 3EX, 18K holdings, GIA certificates, 11200, is it cost -effective?

I went because I didn't understand it, and I saw it for less than 15 minutes, and I regret it. Essence I think I bought it too expensive, so. Essence Essence Please help. Essence Essence thanks