4C’s of Diamond Quality
Monday, July 26th, 2010
Diamonds are graded by four characteristics: cut, carat (weight), clarity, and color. All four of these properties determine how much a diamond is worth.
- Cut – What is the proportion of the diamond? Round brilliant diamonds are commonly cut with 58 facets. The better proportioned these facets are on the diamond, the more light will be reflected back to the viewer’s eye. This is extremely important. When cut properly, the diamond will sparkle more. Diamond cuts are measured by the table percentage, so always ask for it. A good table percentage is between 55-60%. Cut also refers to the shape such as: round, pear, and oval.
If you are having a diamond mounted, write down the measurements of your stone. Measurements never change. Measure the stone after it is mounted and verify that it matches the appraisal and/or certificate. - Carat – How big is the diamond? Larger diamonds often cost more per carat due to their size. There are 100 points to a carat. Hence a 50 point diamond is 1/2 a carat. (There are 5 carats to a gram.) Always get the actual point size of a diamond rather than a fractional weight. Sometimes jewelers will try to sell a .90 diamond as a 1 carat diamond. A .90 diamond should be substantially less expensive.
- Clarity – How clear is the stone? Clarity ranges from flawless (perfect) to I (included). Here is a chart:
- Flawless: perfect inside and out
Internally Flawless: may have minor blemishes on the outside
VVS1, VVS2: have very very small inclusions. VVS1 inclusions can only be seen through the pavilion. VVS2 inclusions are more visible.
VS1, VS2: have very small inclusions. VS1 inclusions are harder to see than VS2.
SI1, SI2, SI3: have small inclusions
I1, I2, I3: have inclusions visible to the naked eye - Color: Diamond colors generally range from D – X for white and yellow diamonds. D is the whitest. Around S they become “Fancy” yellow Diamonds. One can also find green, pink, red, blue and brown diamonds – though these are usually irradiated.Be certain to ask: Do you guarantee the color and clarity of your stones? Many states allow dealers to be off by one color and/or one clarity.
Diamond Jewelry that will provide you all type of Diamond Jewelry like Engagement Rings, Wedding and Anniversary Rings, Solitaire Rings, Diamond Pendants, Bridal JewelryDiamond Earrings and . All the Diamond Jewelry products are confirmed to the utmost international standards and certified by the most reputed gemological labs and the certificate numbers are inscribed on the girdle of the diamond using cold laser technology.
blood ruby.Rubies found mainly in Myanmar (Burma), Africa, Sri Lanka and Thailand.These red corrundum classified among the most valuable of Gems. Rubies in Burma is blood red, pigeon blood. Siam is a dark ruby ruby while Sri Lanka is lighter than the Burmese. The red color is caused mainly by the element chromium. Ruby is classified as one of the four precious stones. The other is a diamond, sapphire, and emerald.
Diamonds themselves are symbolical gems, with their archetypal loveliness and centuries-long relationship to romance and marriage. At the same time, the definite color of diamond a couple may prefer can be translated by the symbolization of each shade.