3.0 I like Helzberg's, but I don't love that they don't guarantee their products for just about any length of your time Except if you shell out added for the lifetime warranty. I bought my granddaughter an "H" necklace & lower than 3 months later on, the chain clasp broke. https://flenzy.store/gold-toned-v-shaped-clavicle-necklace-for-women/