This lovely solitaire ring is made of fine sterling silver, plated with rhodium, and stamped with a "925" quality mark. The striking blue topaz color, 4-prong set, princess cut AAA grade cubic zirconia stone measures about 6.5mm and weighs 1.59 carat. Band measures about 1.8mm. This ring is nickel free and hypoallergenic. Brand: BERRICLE Design: Birthstone & Zodiac Style: Promise Occasion: Valentine's Day Resizable: No Adjustable: No Size/Dimensions: 5 Metal Stamp: .925 Sterling Silver