3.0 I like Helzberg's, but I do not like that they do not guarantee their products for almost any length of time Unless of course you pay excess to the lifetime warranty. I bought my granddaughter an "H" necklace & less than three months later on, the chain clasp broke. https://buy2fdck12010.ambien-blog.com/38136880/the-basic-principles-of-cocktail-ring-jewelry