wholesale 14k gold jewelry I bought a 30-point "Diamond Family" in the mall, level I-J, and 18K diamond ring with SI clarity. Is he selling 8100, is it expensive?

brazilian gemstone jewelry wholesale Inlaid diamond carat weight: 0.30 carats, color: I color -j color-slightly yellow and white (naked diamonds are divided into: I, J color), clarity: SI level-defective grade (bare diamonds are divided into: SI1, SI2, SI3, SI3 Level), 30 -point diamonds, different colors and clarity levels, the price is different.
This palmus material: AU750-18K gold, gold heavy: press 2 grams.
diamond ring price:
i color, SI1 level, cost price: about 4600 yuan, general merchant retail price: about 7300 yuan;
i color, SI2 level, cost price: about 4200 yuan, general merchants, general merchants Retail price: about 6700 yuan;
i color, SI3 level, cost price: about 3900 yuan, general merchant retail price: about 6200 yuan;
J color, SI1 level, cost price: about 4200 yuan, general merchants, general merchants Retail price: about 6700 yuan;
J color, SI2 level, cost price: about 3900 yuan, general merchant retail price: about 6200 yuan;
J color, SI3 level, cost price: about 3700 yuan, general merchants, general merchants Retail price: about 5900 yuan.
The famous domestic brand, the price of 8,100 yuan is slightly more expensive.
For reference only.