Diamond Carat Weight

Hand modeling a 1/2 carat diamond ring. Hand modeling a 3/4 carat diamond ring. Hand modeling a 1 carat diamond ring. Hand modeling a 1 1/2 carat diamond ring. Hand modeling a 2 carat diamond ring. Hand modeling a 3 carat diamond ring. Hand modeling a 5 carat diamond ring.

½ Carat

A weight of .45 to .57 carats is rounded to ½ carat.

¾ Carat

A weight of .69 to .82 carats is rounded to ¾ carat.

1 Carat

A weight of .95 to 1.08 carats is rounded to 1 carat.

1½ Carats

A weight of 1.45 to 1.57 carats is rounded to 1½ carat.

2 Carats

A weight of 1.95 to 2.17 carats is rounded to 2 carat.

3 Carats

A weight of 2.95 to 3.17 carats is rounded to 3 carat.

5 Carats

A weight of 4.95 to 5.17 carats is rounded to 5 carat.

Diamond weight is measured in units called carats.

Each carat is divided into 100 points. A one half carat diamond weighs 50 points, or .5 carats. Diamond weight can also be expressed in fractions (e.g., ½ carat and 1½ carat).

Generally speaking, the larger the diamond, the rarer and more expensive it is, but there is no common equation for determining price based on carat weight alone.

For example, a 1.00 carat diamond typically will cost four times as much as a .50 carat diamond of equal quality.

Each of our bridal diamonds are weighed and guaranteed to an accuracy of 1/100 of a carat.