The 4C's of diamond buying
CARAT describes the diamonds
weight & size. One carat is equal to 100 “points.”
A 25 point diamond = 1⁄4 carat, 0.25 carats, 0.25ct, or 0.25ct tw (carat total weight).
Size of the diamond is just one element in determining its value. Two diamonds of equal size can be very different in price because of their quality. Knowing what to look for is the biggest factor.
|1/2 carat||3/4 carat||1 carat||1 1/2 carat||2 carat||3 carat||5 carat|
|5.2 mm||5.8 mm||6.5 mm||7.4 mm||8.2 mm||9.4 mm||11.2mm|
|.50 ct||.75 ct||1 ct||1.50 ct||2 ct||3 ct||5 ct|
|50 points||75 points||100 points||150 points||200 points||300 points||500 points|
The CUT is the diamonds outside appearance not it’s shape. The cut is used to describe its reflective qualities. The better the cut the better the brilliance. This brilliance is the way the light seems to come from the inside of a diamond. The more perfect the finish and cleanness of angles the better its ability to handle reflect the light and give brilliance.
Cut is very important in selecting a diamond and there are several grading methods that have been developed to help choose the right diamond.
A diamonds cut is graded in a range from:
|Ideal||Premium||Very Good||Good||Fair & Poor|
Diamonds are formed under incredible pressure over millions and millions of years. As a result most diamonds have tiny flaws that are hard to see with the naked eye. These flaws in the trade are called “inclusions” and affect the diamonds clarity and the way it reflects light. The fewer the inclusions or blemishes the higher the diamonds value and rarity. A nearly flawless diamond will always be the most valuable.
A diamonds clarity is graded in a range from:
|F||IF||VVS1 – VVS2||VS1 – VS2||SI1 – SI2|
|Flawless||Internally Flawless||Very very slight inclusion||Very slight inclusion||Slight inclusion|
A diamonds COLOR can refer to the presence or absence of color in white diamonds. Its color never changes over time and a colorless diamond like glass allow more light to pass through it compared to a colored diamond. This color or lack of color gives the diamond their sparkle and inner fire. It is also important to know that white and colorless diamonds are graded differently from colored diamonds.
At D'Antonio and Klein, our diamonds are graded on the
GIA (Gemological Institute of America) professional color scale. This begins with
"D" for colorless all the way to
"Z" for diamonds that are more yellow or brownish in color. Diamonds graded D through F are the most desired because of their rarity and near colorless nature.
|Colorless||Near Colorless||Near Colorless Slightly Tinted||Faint Yellow||Very Light Yellow||Light Yellow|