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Understanding Diamonds
In order to get a beautiful, brilliant diamond at a price you can afford, we have to look at 4 characteristics.

Before you begin your search for a diamond of your own, you should know as much about how diamonds are graded. That’s where this guide comes in. When you’re done with your Diamond Education here, you’ll be able understand what the jewelers are talking about.The first things you shoauld learn are the 4 C’s. That’s Carat, Color, Clarity and Cut. Once you know this stuff, you will be able to evaluate diamonds on your own.
Cut
The cut of a diamond determines its brilliance. There is no single measurement for determining the cut of a diamond. The cut is however a collection of the measurements and observations of a diamond that shows its light performance, dimensions and characteristics. If a diamond has perfect color and clarity, a diamond with a poor cut will have low brilliance. The width and depth of a diamond can have an effect on how light refracts within the diamond.
Too shallow:
Light is lost through the bottom giving the diamond a poor brilliance.

Too deep:
Light is lost through the sides causing the diamond to appear dark and dull.
Color
Diamond color is determined by the amount of color in the stone. The less color there is in a diamond, the better. Color in a diamond will diminish the fire of the diamond.
Note that fancy colored diamonds such as yellow fancy and blue fancy colored diamonds do not follow this chart.
Clarity
Diamond color is determined by the amount of color in the stone. The less color there is in a diamond, the better. Color in a diamond will diminish the fire of the diamond.

F Flawless. No flaws detectable even under 10x magnification! Extremely Rare!
VVS1-VVS2 Very, Very Slightly included. The inclusions are hard to see in these diamonds.
VS1-VS2 Very Slightly included. Minute inclusions are difficult to see under 10x magnification.
SI1-SI2 Slightly Included. Minute inclusions are easier to see with 10x magnification.
SI3 Slightly Included-3. SI-3 is a rating that was devised by a some gemological labs to fill a gap between SI-2 and I1. Because of this, not all gemological labs recognize the SI-3 rating such as GIA.
Opaque Opaque clarity diamonds (including our black and fancy color diamonds) can not be seen through or light can not pass through. All opaque clarity diamonds are graded from A to AAAAA by their qualities listed below with AAAAA being the best quality.

A=   Inclusion & Chip-fair-Looks Okay
AA=   Close Visible Inclusion & Chip-Good-Looks Good
AAA=   Very Close Visible Inclusion & No Chip-Very Good-Looks Fine
AAAA=   Clean Silky Surface with Good Make-Best-Looks Great
AAAAA=   Clean Silky Surface with Perfect Make-Very Best-Looks Excellent
Carat

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