The phrase "carat size" refers to the weight or size of a gemstone, most commonly diamonds. It helps determine how big or small the diamond is. Full definition
Here is the average cost and carat size of engagement rings in different countries. (creditdonkey.com)
Also, it would seem like cutting carat size is the best way to impact price, but actually, two diamonds with equal carat weight can have greatly different prices depending on their cut, color, and clarity. (brides.com)
Decide which elements are most important to you and then start experimenting with carat size to find what's right for you and fits your budget. (theeverygirl.com)