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Carat

A Carat is the unit of measurement for a diamonds weight - it is equal to 200 milligrams, and there are 142 Carats to an ounce. Carats are referenced by dividing them into points - there are 100 points in a Carat.

A half Carat diamond may be referred to as a 50-point stone (about 100 milligrams). Because large diamonds are rarer, they generally have a greater value per Carat than smaller sized stones.

This word for the measurement of a diamond's weight Carat - is derived from the carob seeds that were used to balance scales in ancient times.

Today, it is important to evaluate all of the factors (all the C’s), and not just size. A large sized diamond with poor Clarity, Color and Cut does not have the value of many smaller stones. C’s like Clarity, Color, and especially Cut determine the visual brilliance of the Jewelry.

Different Diamond shapes, while being the same Carat weight, exhibit significantly different sizes. For your convenience, we have detailed Approximate Diamond Sizes by both Diamond Shape, and by Diamond Carat weight for each of the 10 Diamond Shapes we offer for sale. Approximate size information is shown from 0.25 Carat to 2.00 Carat, in 0.25 Carat increments in the table below.


 

Diamond Shapes, Carat Weight, & Approximate Sizes

 
If you don't see your desired Diamond Shape immediately in the table below, please use the scroll bars.
 
 

Diamond Shape Diamond Carat Weight Approx. Diamond Size (MM)
     
Round Brilliant Cut Diamonds 0.25 Carat 4.00 MM
Round Brilliant 0.50 Carat 5.00 MM
Round Brilliant 0.75 Carat 6.00 MM
Round Brilliant 1.00 Carat 6.50 MM
Round Brilliant 1.25 Carat 7.00 MM
Round Brilliant 1.50 Carat 7.40 MM
Round Brilliant 1.75 Carat 7.80 MM
Round Brilliant 2.00 Carat 8.00 MM
     
Princess Cut Diamonds 0.25 Carat 3.75 MM
Princess Cut 0.50 Carat 4.75 MM
Princess Cut 0.75 Carat 5.25 MM
 Princess Cut 1.00 Carat 5.50 MM
Princess Cut 1.25 Carat  6.00 MM
 Princess Cut 1.50 Carat 6.40 MM
Princess Cut 1.75 Carat 6.80 MM
Princess Cut 2.00 Carat 7.00 MM
Princess Cut 2.25 Carat 8.00 MM
     
Emerald Cut Diamonds 0.25 Carat 5.00 x 3.00 MM
Emerald Cut Diamonds 0.50 Carat 6.00 x 4.00 MM
Emerald Cut Diamonds 0.75 Carat 6.50 x 4.50 MM
Emerald Cut Diamonds 1.00 Carat 7.00 x 5.00 MM
Emerald Cut Diamonds 1.25 Carat 7.50 x 5.50 MM
Emerald Cut Diamonds 1.50 Carat 8.00 x 6.00 MM
Emerald Cut Diamonds 1.75 Carat 8.25 x 6.26 MM
Emerald Cut Diamonds 2.00 Carat 8.50 x 6.50 MM
     
Marquise Cut Diamonds 0.25 Carat 5.50 x 2.50 MM
Marquise Cut Diamonds 0.50 Carat 8.00 x 4.00 MM
Marquise Cut Diamonds 0.75 Carat 9.00 x 4.50 MM
Marquise Cut Diamonds 1.00 Carat 10.00 x  4.75 MM
Marquise Cut Diamonds 1.25 Carat 10.00 x 5.00 MM
Marquise Cut Diamonds 1.50 Carat 11.00 x 5.00 MM
Marquise Cut Diamonds 1.75 Carat 11.50 x 5.50 MM
Marquise Cut Diamonds 2.00 Carat 12.00 x 6.00 MM
     
Pear Cut Diamonds 0.25 Carat 4.50 x 2.50 MM
Pear Cut Diamonds 0.50 Carat 6.00 x 4.00 MM
Pear Cut Diamonds 0.75 Carat 7.00 x 5.00 MM
Pear Cut Diamonds 1.00 Carat 8.00 x 5.00 MM
Pear Cut Diamonds 1.25 Carat 8.50 x 5.50 MM
Pear Cut Diamonds 1.50 Carat 9.00 x 6.00 MM
Pear Cut Diamonds 1.75 Carat 9.50 x 6.50 MM
Pear Cut Diamonds 2.00 Carat 10.00 x 7.00 MM
     
Oval Cut Diamonds 0.25 Carat 5.00 x 3.00 MM
Oval Cut Diamonds 0.50 Carat 6.00 x 4.00 MM
Oval Cut Diamonds 0.75 Carat 7.00 x 5.00 MM
Oval Cut Diamonds 1.00 Carat 7.50 x 5.50 MM
Oval Cut Diamonds 1.25 Carat 8.00 x 6.00 MM
Oval Cut Diamonds 1.50 Carart 8.50 x 6.50 MM
Oval Cut Diamonds 1.75 Carat 9.00 x 6.00 MM
Oval Cut Diamonds 2.00 Carat 9.00 x 7.00 MM
     
Heart Cut Diamonds 0.25 Carat 4.00 x 4.00 MM
Heart Cut Diamonds 0.50 Carat 5.00 x 5.00 MM
Heart Cut Diamonds 0.75 Carat 5.75 x 5.75 MM
Heart Cut Diamonds 1.00 Carat 6.50 x 6.50 MM
Heart Cut Diamonds 1.25 Carat 6.75 x 6.75 MM
Heart Cut Diamonds 1.50 Carat 7.00 x 7.00 MM
Heart Cut Diamonds 1.75 Carat 7.50 x 7.50 MM
Heart Cut Diamonds 2.00 Carat 8.00 x 8.00 MM
     
Radiant Cut Diamonds 0.25 Carat 5.00 x 3.00 MM
Radiant Cut Diamonds 0.50 Carat 6.00 x 4.00 MM
Radiant Cut Diamonds 0.75 Carat 6.50 x 4.50 MM
Radiant Cut Diamonds 1.00 Carat 7.00 x 5.00 MM
Radiant Cut Diamonds 1.25 Carat 7.50 x 5.50 MM
Radiant Cut Diamonds 1.50 Carat 8.00 x 6.00 MM
Radiant Cut Diamonds 1.75 Carat 8.25 x 6.25 MM
Radiant Cut Diamonds 2.00 Carat 8.50 x 6.50 MM
     
Cushion Cut Diamonds 0.25 Carat 3.40 x 3.40 MM
Cushion Cut Diamonds 0.50 Carat 4.40 x 4.40 MM
Cushion Cut Diamonds 0.75 Carat 4.95 x 4.95 MM
Cushion Cut Diamonds 1.00 Carat 5.50 x 5.50 MM
Cushion Cut Diamonds 1.25 Carat 6.00 x 6.00 MM
Cushion Cut Diamonds 1.50 Carat 6.50 x 6.50 MM
Cushion Cut Diamonds 1.75 Carat 7.00 x 7.00 MM
Cushion Cut Diamonds 2.00 Carat 7.50 x 7.50 MM
     
Asscher Cut Diamonds 0.25 Carat 3.40 x 3.40 MM
Asscher Cut Diamonds 0.50 Carat 4.35 x 4.35 MM
Asscher Cut Diamonds 0.75 Carat 4.95 x 4.95 MM
Asscher Cut Diamonds 1.00 Carat 5.50 x 5.50 MM
Asscher Cut Diamonds 1.25 Carat 6.00 x 6.00 MM
Asscher Cut Diamonds 1.50 Carat 6.50 x 6.50 MM
Asscher Cut Diamonds 1.75 Carat 7.00 x 7.00 MM
Asscher Cut Diamonds 2.00 Carat 7.50 x 7.50 MM



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