3.0 I like Helzberg's, but I do not like that they don't guarantee their products for almost any length of time unless you pay back more to the lifetime warranty. I bought my granddaughter an "H" necklace & below 3 months afterwards, the chain clasp broke. I had go through https://carly332oxg3.blogdemls.com/31673354/aquamarine-jewelry-for-dummies