As the name suggests, shape (round, princess, radiant, etc.) describes a diamond's form. The beauty of the individual shapes is a matter of personal taste.
One carat is equal to 0.20 grams (weight). In the diamond industry "1.00 carat" is divided into 100 "points", so for example a 70 "points" diamond weighs 0.70 carats.
Two diamonds of equal carat weight can have very different costs based on other factors (cut, color, clarity and other).
Two diamonds of equal carat weight may also appear very different in size based on the shape of the diamond. For instance, a 1 carat marquise tends to appear larger than a 1 carat round.
This is the term with which people are most familiar, but bear in mind that carat is specifically a measure of a diamond's weight.
Colors, range from "D" grading (as the most colorless) to "Z" grade (as the closest to fancy yellow).
The closest to colorless a stone is, the more valuable the diamond is.
A diamond's color grade refers to the lack of color. Diamonds that are white, containing little or no color, receive higher quality grades than those with visible color.
Cut is a feature that reflects the beauty and brilliance of the diamond, and usually determines both the value and price.
A key factor when making a diamond purchase is cut, as one may decide to compromise on clarity, size or color, but never on the cut.
You must always ensure that you have the most ideal cut diamond.
An Ideal cut has a specific set of guidelines defining the proportions that give a diamond the highest level of fire and brilliance.
The cut of a diamond determines its brilliance. Put simply, the better a diamond is cut, the more sparkle it will have.
Clarity refers to the extent of birthmarks or "inclusions" in the diamond. Most inclusions are not visible to the naked eye and can be viewed through a 10X magnification
device. Inclusions interfere with the dispersion of light and affect a diamond's brilliance. With fewer and slighter inclusions, the stone is both rarer and more valuable.
Clarity of a Diamond Clarity is graded on a scale that ranges from internally flawless (IF), very very small inclusions (VVS1-VVS2), very small inclusions (VS1-VS2), small inclusions (SI1-SI2) to imperfect (I1-I2-I3) with obvious visible.
Almost all diamonds have tiny imperfections. Diamonds with few or no imperfections receive the highest clarity grades.
Conflict diamonds are diamonds illegally traded to fund conflict in war-torn areas, particularly in central and western Africa.
The United Nations (UN) defines conflict diamonds as "...diamonds that originate from areas controlled by forces or factions opposed to legitimate and internationally recognized governments, and are used to fund military action in opposition to those governments, or in contravention of the decisions of the Security Council." These diamonds are sometimes referred to as "blood diamonds."
All DDG diamonds have been purchased from legitimate sources not involved in the funding conflict.