Because the grade difference between diamonds is difficult to identify with naked eyes, the investment risk of carat diamonds without appraisal certificate is very high, because a grade difference may lose tens of thousands of yuan. From the investment point of view, diamond is not a suitable investment commodity.
When buying diamonds, consumers should spend rationally and choose according to their own economic strength. Although the better the fineness of a diamond, the heavier its weight and the faster its appreciation.
Extended data
The color of diamonds
Diamonds have many natural colors, from precious colorless (white after cutting), rare light blue and pink to common light yellow. The more transparent and colorless, the more white can penetrate, and the richer the color after refraction and dispersion.
The grading of diamond color is determined by technicians repeatedly comparing the diamond to be graded with the standard color colorimetric stone in the grading environment of professional laboratories.
The whitest diamond is classified as D (starting with the first letter of the diamond). The color of diamonds is divided into 1 1 grades, which are D, E, F, G, H, I, J, K, L, M and N in turn.
Baidu Encyclopedia -4C
Is it true that diamonds below-1 carat are not preserved?