Sterling Silver Snowflake Necklace Set With Cubic Zirconia. Stones. 12 MM Overall Diameter,1.5 & 2 MM Stones. Comes on a 16-18 Inch Adjustable Chain. The Finest AAA Grade Cubic Zirconia Stones. 925 Silver – Hypoallergenic , Rhodium Finished For Tarnish Free Wear.