How does it calculate the diamond diamond?
For example, 1ct = 0.2 grams = 100 points, why is this, how to calculate it, please explain in detail, thank you. Essence
How is the price of ordinary diamond rings calculated?
Recently, I want to buy a diamond ring. How did the general diamond ring be calculated?
How to buy a diamond ring. How did the price of diamond rings be calculated?
How did the price of the diamond ring be calculated?