3.0 I like Helzberg's, but I don't love that they don't warranty their products for virtually any length of your time Unless of course you shell out excess with the lifetime warranty. I bought my granddaughter an "H" necklace & lower than three months later on, the chain clasp broke. https://flenzy.store/rhinestone-heart-collar-choker-necklace-elegant-open-collar-jewelry-for-women/