One of the 4C standards is cut, which is for brilliant cut diamonds. When other factors are the same, the diamond value of the brilliant cut process is regarded as the highest. So how many cutting methods are there for diamonds? Here is a brief introduction to the methods Please refer to the 4C standard …
Diamond processing: the preparation process from rough to millions of diamonds اقرأ أكثر »
الماس الرمادي المثمن الكريستالي الأكثر اكتمالاً, 4.12 قيراط, 10.8*8*8مم, جنوب أفريقيا 0.67 قيراط, 7*4*2.5مم, الماس من جنوب أفريقيا 1.13 قيراط, 7*5*4مم, جمهورية افريقيا الوسطى 1.76 قيراط, 7*6*6مم, البرازيل 1.91 قيراط, 7*6*6مم, Brazil Brown octahedron, 7.19 قيراط, 12*9.5*9مم, South Africa Brown diamonds, اثنين 5.63 قيراط, 7*6*6 و 7*7*6, Australia Gray slender octahedral crystal 1.68 carats 7*6*5mm …
Diamonds are natural gemstones formed under the conditions of high temperature and high pressure deep in the earth. Through some knowledge of diamond knowledge, we know that diamond has the characteristics of high hardness, high refractive index and high dispersion rate, and its melting point also reaches 3550°C-4000°C, so can diamond be burned with fire? …
Can diamonds be burned with fire? Don't try it lightly! اقرأ أكثر »
Many people know that the formation of rough diamonds takes more than one billion years, and a rough-looking rough diamond needs to go through complicated cutting and polishing to turn into a diamond with a beautiful appearance. Today we will reveal the secret of the cosmetic procedure of a rough diamond. Planning and marking is …
The visual identificSince the outbreak of the epidemic, there have been several obvious changes in the international diamond market: 1.The downstream of the industry (retail) first declined and then increased, directly affecting the midstream (processing industry) and upstream (التعدين) of the industry; 2.The market in the post-epidemic era has developed rapidly, helping the midstream and …
The visual identification of rough diamonds Manpower from the following aspects: (1) Observe the gloss Because diamonds have a special diamond luster, the refractive index of diamonds is as high as 2.417. There are few natural gemstones with a refractive index as high as mineral oil. The rough diamonds can see strong luster even on …
