Large round London Blue Topaz has dazzling facets on the underside of the stone. It is about 5 carats and is 15mm and stands 10mm from the patterned wire I have it set on. I wrapped it with gold filled wire to a flower on a long stem utilizing Bobbi Maw's pattern. It is a size 8 .This is one of my most favorite stones in all the ones I am selling online. It is a real God made stone.