Diamonds recovered diamond ring recovery Fuzhou recovery 138-5907-5567

Solutions carat weight carat diamond weight measurement standards. 1 karat equals 200 milligrams. When diamonds are measured by weight, one karat and is equivalent to 100 "points" so that the carat weight accurate to two decimal places. Jeweler can describe a weight of less than 1 carat diamond directly "points." For example, 0.25 karats of diamonds, also known as "twenty-five minutes." But more than 1 carat diamond, can only accurate to percentile "carat" to describe. For example, 1.08-carat diamond only "1.08 karats" to illustrate its weight. As we all know, the larger the diamond, the higher its rarity. Therefore, the price of diamonds will increase carat weight increases. However, even two diamonds of the same weight, its value (and price) may be very different. Because the value of the diamond 4C standard also depends on the other three criteria: clarity, color and cut important to remember that a diamond's value is not only determined by its carat weight, but decided jointly by the 4C standard, lack of one can not. Diamond color actually refers to the degree colorless. For most precious diamond, its color identification standards depends on the extent of its colorless. A structure free of impurities and perfectly pure diamond like droplets, is no color, has a high value. GIA created the DZ color grading system, under precisely controlled by the lighting, viewing conditions, the diamond with 'colorimetric stone' than to identify the extent of its colorless. Diamond Clarity refers to its non-inclusions and surface features of the extent of natural diamonds are carbon atoms in the form of high temperature and pressure environment. And this process has also led to every diamond has internal characteristics called "inclusions" in the diamond surface is called "surface features." Clarity of diamond evaluation, including a number of the above features, size, visibility, type, location and extent of the impact on the overall appearance of the diamond identification. Although There is no absolute perfect natural diamond, but the higher the clarity of the diamond, the higher the value. GIA Diamond cleanliness standards, divided into six categories, 11 levels. Flawless (FL): observation at 10x magnification, the diamond has no inclusions or surface features. Within Flawless (IF): observed under 10x magnification, without any inclusions within the diamond. Very slight inclusion level (VVS1 and VVS2): observed under 10x magnification, diamonds have tiny inclusions inside, even professional appraisers are difficult to see. Slight inclusion level (VS1 and VS2): observed under 10x magnification, inside diamonds have tiny inclusions. Containing micro level (SI1 and SI2): at 10 times the magnifying glass, diamond has visible inclusions. Inclusion level (I1, I2 and I3): diamonds under 10x magnification defect is apparent, and may affect the transparency and brightness of diamonds. Diamond inclusions and surface features are usually very small, only a professional diamond appraisers to see. The naked eye, VS1 grade diamonds and SI2 grade diamonds may be exactly the same, but the quality and value but vary greatly. Therefore, professional precise identification of Clarity is very important. Diamond cut diamond bright light to create a unique high refractive created a bright light of the diamond, making it stand out among the stones. Many people will be equivalent to the diamond cut shape (round, emerald shaped, teardrop-shaped) diamonds. In fact, it depends on its diamond cut grade faceted interaction with light results. From rough to polished diamonds, it requires complex processes and superb cutting skills. Only carefully crafted Cutting ratio, symmetry and polished to a perfect show unique diamond bright light. Cut to the appearance and value of diamonds is essential, and 4C standard is the most complex, highest standard of identity in order to determine the technical requirements of a standard round brilliant cut diamond rating (the most common shape diamond jewelry). GIA will calculate the proportion of each facet, these proportions will affect the appearance of the diamond face up. Thus, GIA can identify the extent of each diamond formation of dazzling visual effects of the interaction of light with a facet: Brightness: Diamond is reflected by the internal and external fire out of the white color: white is parsed into a colorful spectrum of colors flash : in the form of a diamond produced and due to light flicker caused by reflections of light and dark areas within the diamond. In addition, GIA cut grade appraisal also includes the relative proportions of the diamond and the diameter of the waist thickness (which can affect the diamond's durability), the commentary facet symmetry and polishing quality, and other facets of a diamond design and cutting technology Kam. GIA DZ color of the standard round diamond's cut assessment contains five levels: Excellent (Execellent), fine (Very good), good (Good), fair (Fair), poor (Poor) about us Xin Code consignment row micro-channel public number: XD0591 focus watches gold diamond luxury jewelry appraisal mobile computer recycling pawn business consignment Tel: 13859075567 Customer Service: QQ: 507188198 national service hotline: 0591-83111778 Company Address: No. 202 Fuzhou Road Cargo