What is A3 cubic zirconia?

A3 cubic zirconia (CZ) is a synthetic gemstone known for its high clarity and brilliance, often used as a diamond substitute. The "A3" designation typically refers to a specific color grade within the cubic zirconia spectrum, indicating a certain hue or tone that mimics the appearance of natural stones. CZ is popular in jewelry due to its affordability, durability, and ability to be produced in various colors and cuts. Unlike diamonds, cubic zirconia is not a naturally occurring mineral but is instead manufactured in laboratories.