From the analysis of diamond color grade, I and J diamonds belong to near colorless grade, which are two very good diamond colors. The diamond rings made of them are called good diamond rings.

The color of diamonds is divided into 23 grades, from the high-quality colorless of D grade to the light yellow or brown of Z grade, and the grades decrease step by step, so does the quality.

Colorless grades: D, E, F, the types of colorless grades are very rare, among which D color is a very good grade color, and it is also the color grade that many diamond rings like to use.

Nearly colorless grades: G, H, I, J, the color is almost invisible to the naked eye, but it will be relatively colored when compared with colorless grades.

Yellowish grade: k, l, m, it is generally difficult to see the color directly. If it is more than 1 carat, the color will be more obvious.

Pale yellow grade: n, o, p, the color visible to the naked eye. Few people will choose such a diamond ring. As for P-grade diamonds, they rarely appear in the public's field of vision, because the jewelry industry has strict control over the color grade of diamonds. Most brand diamond rings use colorless diamonds, such as DR diamond rings that men can only customize once in their lives.

Mosanzuan

Moissanite, named after Dr. Henry Mosan. Also known as Mosan stone and moissanite, the chemical name is synthetic silicon carbide, which is similar to diamond in appearance and is often used as a substitute for diamond. It is also a kind of gem whose physical characteristics are closest to natural diamonds.

Magic star diamond is a kind of Mosan diamond, which needs to meet the requirements of D color, Belgium eight hearts and eight arrows, FL/IF clarity grade, and Mosan diamond produced in Antwerp, Belgium, in order to be called magic star diamond.

Mosang Diamond was originally developed by overseas companies in Europe and America, with an investment of 45 million US dollars. It was launched as a patented product in June, 1998. Its patent protection expires on 20 16, and all countries in the world are producing Mosan diamond. Its chemical composition is SiC, almost colorless, with refractive index of 2.56-2.69, dispersion of 0. 104, birefringence of 0.043, hardness of 9.25 and density of 3.22g/cm3.