 | square zirconite ring with pave border - black enamel The hardness of ZIRCONITEr cubic zirconia ranges between 9.0-9.1 while ordinary cubic zirconia ranges between 8.5-8.9. Glass or sand is approximately 5-6, therefore dust and dirt will not scratch ZIRCONITEr. Indeed, ZIRCONITEr cubic zirconia can scratch glass just like natural diamonds. ZIRCONITEr is also tougher than sapphire, making ZIRCONITEr more chip resistant. Color: blk/lt tpz $24.00 Click To Buy |