Is it true that Cubic Zirconia is indistinguishable from a real diamond?
No. Cubic Zirconia is slightly less brillient than diamond. Cubic Zirconia also has a higher specific gravity and density than diamond. This means that even if all other appearances were indistinguisable from a natural diamond, then you could tell the difference between the two by size and weight: for the same size stone, the Cubic Zirconia will be 75% heavier than a diamond. So if the diamond weighed 1 carat, the Cubic Zirconia stone would weigh 1.75 carats. However, to the layman the quickest and easiest test is to understand the relationship between the 4 C’s (Color, Cut, Clarity, and Carat) and the market price. If the “diamond” is flawless (no visible inclusions or internal flaws with a jewelers loop) then the “diamond” is suspect, as this would be a much rarer diamond. Especially if it’s being offered for significantly less than expected market value. Visit several reputable jewelry stores and tell them you are shopping for diamonds and you want would like them to teach you about
