I don't know anything about diamond rings, but in order to broaden my knowledge, I went to look them up. I can only give you some price comparisons.

current price

Mengdi jewellery

PT950 diamond ring WS0. 19CT

PT950 diamond ring WS0. 16CT

PT950 diamond ring WS0. 1 17CT

PT950 diamond ring WS0.078CT carat

7225 yuan

55 13 yuan

4400 yuan

39 13 yuan

Tiandi jewellery

PT950 diamond ring WS0. 165CTWS

PT950 diamond ring WS0. 12CTWS

PT950 diamond ring WS0.43CTWS

PT950 diamond ring WS0. 17CTWS

5430 yuan

356 1 yuan

18380 yuan

5220 yuan

Fujun jewellery

PT950 diamond ring 0.2 1CT-J color WS

PT950 diamond ring 0. 14CT-J color WS

PT950 diamond ring 0. 12CT-J color WS

PT950 diamond ring 0. 13 1CT-J color WS

64 13 yuan

4324 yuan

3559 yuan

4283 yuan

Winning number diamond

PT950 diamond ring 0.25 carat

PT950 diamond ring 0. 15CTVS

PT950 diamond ring 0. 1 1CTVS

7700 yuan

4340 yuan

3370 yuan