jewelry guaranteed wholesale I bought the diamond family's diamond ring white 18k gold, 3.1847 grams. Diamond clarity level i1, color level E, 0.50ct, garden diamond shape, 12,000 yuan expensive?

jewelry guaranteed wholesale Diamond ring 18K gold, 3.1847 grams. Diamond clarity level P, color level E, 0.50CT, garden diamond shape, 12,000 yuan expensive?