In fact, buying diamonds should not look at brands, but mainly at stones. That is, the 4C on the diamond certification certificate that we often say.

Color: arranged from the letter D, D, E and F are the best, that is, they are closest to colorless, and will gradually turn yellow in the future.

Cleanliness: usually higher than Si. But if you really have more money than you can spend, you can buy VVS or even IF (a rare carat diamond).

Cutting: It is generally better to buy 3EX certified by GIA (three items are cutting, polishing and symmetry), but in fact, there is a higher level above Excellence, that is, ideal, which is relatively rare.

Carat: that is, weight, one carat =0.2 gram. A diamond needs at least 1 carat to keep its value, because a carat diamond needs at least 3 carats of rough stone to polish.

In addition, it should be noted that a round diamond with the same quality and the same number of carats is always the most expensive. Shaped stones are much cheaper.

Certificate certification recommends AGS certification with four 0 certifications, which belongs to the highest level of diamond certification.

D, IF, 3Ideal equivalent to GIA certification (I'm not sure whether GIA certification really has this level of ideal, but I haven't seen it, AGS is better at cutting).