½ carat is the same as a .50ct diamond where as 1/3 of a carat is approximately .37cts. Therefore .50ct is larger
than the .37cts. Some retailers use fractions as opposed to decimals when the carat weight is under a carat or
when they are giving a description of a piece using a total weight of all the diamonds. However this can be
confusing, so it's best to always do the math to know for sure the carat weight and compare with other retailers.