Purity Options 10K / 14K/ 950 / 925. Earring Closures Screw Back / Push Back. THE LOZY BLUE PROMISE. Diamond Sizes 1.00 CT to 10.00 CT. Ring Sizes Custom fit for every finger. We are a distinguished jewelry manufacturer based in the USA and India, dedicated to creating exquisite fine jewelry for those who value quality, beauty, and sophistication.