3.0 I like Helzberg's, but I don't love that they don't warranty their products for any length of your time Unless of course you fork out extra for your lifetime warranty. I bought my granddaughter an "H" necklace & less than 3 months later, the chain clasp broke. I had https://flenzy.store/sterling-silver-angel-wing-pendant-necklace-with-purple-zircon/