"Eight Hearts and Eight Arrows" in Diamond and Mosan Diamond Cutting &; The light of the twelve constellations "Which fire is better?

Many friends who buy Mosan diamonds may have heard others introduce 3EX Mosan diamonds. Some people may know that this refers to the cutting of Mosan diamond, so what is 3EX Mosan diamond? Is 3EX cutting the best?

3EX refers to the excellent cutting grindability, polishing (polishing degree) and symmetry (symmetry) of Mosang diamond, and the combination of these three is 3EX. Of course, the synthesis of 3EX should be the most perfect cut, and it shows the best fire color of Mosan diamond.

Cutting and grinding: the angle and proportion cut by experienced technicians in the process of transforming raw materials of Mosan diamond into polished Mosan diamond.

Include platform width ratio, crown height ratio, waist thickness ratio, pavilion height ratio, bottom tip ratio, overall height ratio, crown angle, pavilion angle, diameter and height. The grades are excellent (EX), very good (VG), fair (F) and poor (P).

Polishing degree: refers to the diffuse reflection of light on the uneven surface of Mosang diamond, and describes the smoothness of Mosang diamond surface. Polishing is characterized by being located on the surface without obvious infiltration. Observe with a magnifying glass of 10X.

Polishing is divided into excellent (EX), very good (VG), fair (F) and poor (P). When the polishing degree is serious, it will not only greatly weaken the brightness of MoO3 diamond, but also affect the transparency of MoO3 diamond. Polishing quality is mainly related to the cutting and grinding technology of Mo Sanshui, as well as the skills and care of cutting tools.

Symmetry: the horizontal symmetry of each part around the center point obtained by Mo Sanshui after cutting and polishing, that is, the arrangement of cutting planes and the angle between them. And the ratio, which are important indicators of the second evaluation. If the lathe work and proportion of a Mosan diamond are excellent, symmetrical cutting will make flash mining more intense.

The evaluation of symmetry in foreign certificates is more detailed, from high to low:

1, IDeal (id)

2. Excellent (for example)

3. Very? Good (VG)

4. General (F)

5. Difference (P)