First of all, the price of 50 cents loose diamonds.
Because most diamond mines are monopolized by jewelry companies, the price of 50 cents of rough stone depends on the specific brand price, which is usually divided into foreign luxury goods and domestic brands.
1, foreign luxury quotation 1.2-35000.
The price of pure bare diamonds is not so expensive, but after the artistic processing and publicity of internationally renowned brands, its value will have a premium. Taking 1 G color, VS2 grade and VG cut loose diamonds as an example, the quotation is about1.8-35,000 yuan.
2, domestic brands 0.6-10.5 million
Domestic well-known brands have a strong ability to obtain loose diamonds, and there are many high-quality loose diamonds. Coupled with the added value of the brand, the price of 50 loose diamonds is mostly above 10,000 yuan. However, small enterprises are located in the downstream of the diamond industry and have unique ways to obtain diamonds. The quality of diamonds is poor, and the price is between 0.6- 1.0 million yuan.
Second, the factors affecting the price of loose diamonds
Diamond 4C is an index to judge the quality of diamonds, and it is also the main factor that affects the price of bare diamonds.
Karatachi 1
Diamonds are measured in carats, and 1 carat is equal to 100 cents, which is about 0.2 grams. Sometimes people will say 1 carat is 1 calorie. The heavier the diamond, the more expensive it is, and it will increase exponentially after reaching carat diamonds.
2, color (color)
Generally speaking, international standards are white and transparent. GIA (Gemological Institute of America) certificate divides it into 1 1 grades, which are D, E, F, G, H, I, J, K, L, M and N respectively. Where d is the ideal color and n is the worst color.
Step 3 be clear
In order to determine the transparency of diamonds, gemologists observe them at the magnification of 10 (10) and evaluate the inclusions in diamonds. The higher the clarity, the higher the value. Gemmologists use the following 1 1 grades to classify the clarity:
FL (Flawless), IF (Flawless Inside)
VVS 1 and VVS2 (very, very slight)
VS 1 and VS2 (very slight)
SI 1 and SI2 (omitted)
Imperfect: 1), I2 (imperfect: 2), I3 (including: 3)
4. Cut (cut)
Cutting is divided into three parts: cutting, symmetry and polishing. Reduce the width ratio and pavilion depth of the grandstand. The countertop is too big, the fire color is insufficient, and the countertop is too small and not high. The depth of the pavilion determines whether the light can be totally reflected when it passes through the diamond. Too deep is a black diamond, too shallow is a fisheye diamond.
Symmetry means that the facets of the diamond should be equal and symmetrical, and the mesa should be centered and not inclined, while polishing has an influence on the brightness of the diamond.
Gemological Institute of the United States divides it into five grades, namely: ideal cut (EX), very good cut (VG), good cut (G), general cut (F) and poor cut (P).