I just weighed it on my kitchen scale, lol. It weighs 2.95oz, whereas my regular JUC is 1.15oz. It feels heavy and substantial on the wrist, but not uncomfortably heavy. I'm pretty sure my SA said it's solid gold.
My normal JUC is a 15, and this one is a 16, which is the smallest size they make in this large style. Still, I probably would have gotten it in the 16 anyway because it looks really good being a little more loose like a bangle, and yet it still doesn't flop around. For reference, I am a size 15 JUC, 15 clash, 16 ecrou, 17 love (really somewhere between a 16 and 17 in the love but I went with the bigger size).