I was a little frustrated with this ring before I even ordered it bc the seller did not disclose how big the stone is which I think is a big deal!! So I decided to read all 80-some reviews and not one review says how many carats or mm the stone.. Some of the reviews describe the stone as  big or showy. and also a lot more pale than the pic. So I took my chances and ordered it anyways. When I first laid eyes on this ring I thought its a smaller stone than I was hoping for BUT it was way more blue than I was expecting!. Its really blue but I think the correct word to describe this stone when comparing it to the pic is its not as VIVID as the pic but still very blue. By no means clear or pale.  As for the size I am guessing its around 3 to 3.5 carats. I think the size in the pic is more deceiving than the color. I don't have large hands but I do have long fingers. I guess I was hoping for a little more eye catching like 5 carats but for the money its still a very nice ring. u won't find a ring for near this price at a jewelry store. Amazom has some of the best prices on jewelry so if I can find a topaz with a larger stone for around the same price or a little higher Im gonna return it or if it get cloudy. But if not I will happily keep it. Also the band is a nice thickness for the size of stone and the four prong settting seems really sturdy. Dont get me wrong this is a really pretty ring that looks 5 times more expensive than the actual price. Will update in a few weeks!