I actually don't know the weight for sure, I could probably get the dimensions from the jeweler, I forgot to ask them to weigh it.... but then again maybe they did for the heck of it.... In any case, I remember when I was little my mom would often throw out there that it was about 1.5 cts. It definitely looks substantial on my finger, and larger than my 1.01 emerald cut but it's hard to tell, plus that finger is a 3.5, my right is a 3 and it looks even bigger on that hand, lol.