I love this. The ring in whole is about 14 mm. The pearl is actually 6 mm. The ring is adjustable, as said, which is a feature I truly adore and can rarely find in decent quality, and highly fashionable rings. The band is comfortable, although I did pull the edges of it upward a tad bit so they didn't bother me. The size of the ring altogether is perfect for my hand size, but if you have extremely slim fingers, it may look too bulky. I can't speak on durability as I haven't had this ring for more than an hour, but I just absolutely had to talk about it. Extremely pleased with this purchase though. I'll update as time goes on :)