3.0 I like Helzberg's, but I don't like that they do not warranty their products for almost any length of your time Except if you fork out more with the lifetime warranty. I bought my granddaughter an "H" necklace & under three months later, the chain clasp broke. I'd go https://rafaelostvc.wikiexpression.com/3896863/aquamarine_jewelry_for_dummies