Carat weight: 1.3 ct.
Diamond carat weight is the measurement of how much a diamond weighs.
A metric "carat" is defined as 200 milligrams.
your diamond 1.3ct.
1.27 Carat Round Loose Diamond, M, SI2Excellent, GIA Certified
1.28 Carat Round Loose Diamond, K, SI2Very Good, NONE Certified