Details Composition: 75% Titanium Steel, 25% Crystal Size & Fit Fit Type: Regular Fit Selected gemstones are formed over time by nature and have unique variations in color and cut. Cm Inch Size Length One Size 37-42 One Size 14.6-16.5 Care Instructions This Jewelry Needs Extra Tlc. And Like All Precious Delicate Things, Please Avoid Contact With Water, Other Liquids And Metals So That It Won’T Lose It’s Color And Shimmer.