Diamond, Engagement Ring, and Jewelry Buying Guides
Carat weight
Diamond weight is measured in carats, a small unit of measurement equal
to 200 milligrams. Each carat is divided into 100 points. Therefore, a
half-carat stone may be referred to as a "50-pointer" or "50-points".
Carat weight is the easiest of the 4 C's for gemologists to determine
because of the use of sophisticated measuring equipment.
Two diamonds of equal carat weight might vary greatly in value
depending upon their cut, color and clarity. This is important because
when mounted, one diamond may appear larger than the other, although
they actually weigh the same. Because large diamonds are rare, they
generally have a greater value per carat. For example, the price of a
two-carat stone will be several times higher than four 50-pointers of
equal quality.
Diamond Guide
Diamond Cut
Diamond Color
Diamond Clarity
Carat Weight
Diamond Certification
Diamond Care
Carat Weight and Diamond Price Comparison Tool
For an easy comparison of price and size, see the illustration below.
Prices are approximate and based upon an ideal cut, G Color, VS2
clarity, diamond:
1.00 ct Round
Approximate Starting Price: $1,001
0.50ct
5.2mm
0.75ct
5.8mm
1.00ct
6.5mm
1.50ct
7.4mm
2.00ct
8.2mm
Determining the Carat Weight that's Right for Her
Determining the carat weight that is right for her is a simple choice.
Consider the size of her fingers. If she has a fairly small ring size,
a smaller diamond will look proportionate on her hand. Find a moderate
balance between the color and clarity grades to see how much carat
weight you can get for your budget. Also, bear in mind the width of
your engagement setting. Find a carat weight that compliments the
setting nicely without overpowering it, and visa versa.
