Three.0 I like Helzberg's, but I don't like that they don't guarantee their products for just about any length of your time Except you pay added for that lifetime guarantee. I bought my granddaughter an "H" necklace & below 3 months later on, the chain clasp broke. I had read https://dirstop.com/story21493085/examine-this-report-on-initial-necklaces-diamond