How does it calculate the diamond diamond? 2022-10-11 For example, 1ct = 0.2 grams = 100 points, why is this, how to calculate it, please explain in detail, thank you. Essence Previous articleI want to buy a golden ring for myself as a gift for college, but I don’t know how much gold is now. I don’t know what brand is good.Next articleWhat gift should my brother 2 on February 18th birthday?