Aviant jewellers are perfectionists at Simulated Diamonds made of Cubic Zirconia. The beautiful cubic Zirconia Sterling silver engagement rings for women from Aviant are studded with these diamonds.Though these are artificial imitants or substitutes they have some remarkably outstanding qualities. These are pretty hard (around 8.5 on Mohs scale), with vitreous or glassy Lustre. The Refractive index (around 2.16) and the Dispersion (around 0.060) is also relatively high. So they do not scratch easily and sparkle a lot with dazzling brilliance. Aviant Jewelers are specialists of Women's Engagement Rings made with High Quality Zirconia Diamonds and Sterling Silver at great prices -A Beautiful 3 Carat Round Halo Engagement Ring in 925 Sterling Silver -A Brilliant and Radiant cut, 3 ctw Solitaire Cubic Zirconia, Flawless clarity and D grade color Engagement ring for women, in 925 Sterling Silver is available at a good price at Amazon.