3.0 I like Helzberg's, but I do not like that they don't warranty their products for virtually any length of your time Unless of course you pay back further for that lifetime guarantee. I purchased my granddaughter an "H" necklace & less than 3 months afterwards, the chain clasp broke. https://andresntyzb.ka-blogs.com/85183664/aquamarine-jewelry-for-dummies