Carat weight: 1.59 ct.
Diamond carat weight is the measurement of how much a diamond weighs.
A metric "carat" is defined as 200 milligrams.
your diamond 1.59ct.
1.54 Carat Round Loose Diamond, I, I1Very Good, NONE Certified
1.59 Carat Round Loose Diamond, M, VS2Very Good, NONE Certified