Cubic Zirconia (CZ) grades categorize stones based on their cut, clarity, and polish. While the scale traditionally goes from A to 5A, some manufacturers use “6A” to denote premium, “super-ideal” cuts.
Grade A: Commercial Quality.
Grade AAA: Standard Jewelry Quality.
Grade 5A (AAAAA): High-End Quality.
Grade 6A (AAAAAA): Boutique/Premium Quality.