20、mond gradingFrom the color (color), clarity (clarity), cutting (cut) and quality (carat *) four aspects carry on the classification of diamond, referred to as 4C grade.* we continue to use the carat quality unit, 1ct=200mg, in the international diamond trade.2.3 color grading color...
• Part of diamond valuation is determined by the absence of color, with more colorless diamonds receiving higher grades along the diamond color and clarity scale. • Only certified grading professionals should determine a diamond’s color grade. • The tone of a ring’s setting can affe...
The variable qualities of diamonds are grouped into four major categories, commonly referred to as the "Four C's": CARAT, COLOR, CLARITY, and CUT. As a potential diamond owner, it is advisable to know what gives your diamond its unique value. While minor variations in any of the ...
DIAMOND EDUCATION The four most popular factors, or the “four C’s”, used to measure diamond quality are:Diamond Cut,Diamond Color,Diamond Clarity, andCarat Weight. This section contains all the information you need to search through our diamond database with confidence and find ...
FL (or Flawless) is the highest grade for clarity. An FL diamond has no imperfections even when magnified 10x by a professional. For color, D or completely colorless diamond is the highest grade. While flawless and colorless diamonds are extremely rare, cut determines a diamond's true value....
Take a look at these three diamonds, each of which has been graded by GIA at the same color, clarity and cut grade: G, SI1, Excellent. You'll see that the three stones look substantially different. One of the stones has a brownish tinge, which is not reflected in the color or clari...
over 0.25ct should come with a full report (or certificate) issued by a gemological laboratory. Color and clarity grading is subjective so tolerances among labs vary – even between a single lab’s various locations – but theaccepted standardamong reputable institutions is +/- one grade. ...
2、Color Grade(钻石的颜色):钻石的颜色级别是从D色开始到Z色的。另外例如粉红色或者其他彩色钻石,GIA会出具另外一种彩钻证书。 3、Clarity Grade(钻石的净度):GIA将钻石净度分为FL、IF、VVS1-VVS2、VS1- VS2、SI1-SI2-SI3、I1-I2-I3等级别 ,从前到后依次递减,F-VVS1是收藏家的最爱,相对升值性更高,...
You will be able to grade polished and unpolished diamonds using the following criteria after completing the training: color, clarity, cut, carat weight, shape or model, yield, and weight recovery, fluorescence. Learn how to correctly use a loupe to identify inclusions and flaws and how they ...
This Round Cut Laboratory Created Diamond Melee is graded VS clarity and E-F Color by a certified diamond grading specialist. Lab Diamonds are very popular due to 1/3 the cost of natural genuine diamonds but have the same physical properties and beauty. A VS clarity graded diamond will have...