Sterling Silver 925 cubic zirconia earrings. Four claw set for optimum protection and security of the 4mm central gem stone. These beautiful octagonal shaped earrings are 7mm by 7mm. The posts are 10 mm long. Crafted in nickel compliant, 925 stamped sterling silver. Isabella Silver Isabella Silver are proud to offer these beautiful stud earrings. All pieces come packaged in a beautiful purple organza gift bag making them wonderful gifts or why not treat yourself. Isabella Silver offer a customer service team available seven days a week to answer any product questions before, during or after the purchase. If you’re not satisfied for any reason and return your purchase within 30 days you will receive a full refund. Cubic Zirconia Versus Diamond There are a few key features of cubic zirconia which distinguish it from diamond: Hardness: cubic zirconia has a rating of approximately 8 on Mohs hardness scale vs. a rating of 10 for diamond. The density of cubic zirconia is about 1.7 times that of diamond. Dispersion is very high at 0.058–0.066, exceeding a diamond's 0.044. Only the rarest of diamonds are truly colorless, most having a tinge of yellow or brown to some extent. By comparison, a cubic zirconia is entirely colorless: equivalent to a perfect "D" on a diamonds grading scale.
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