This wrap has a total of six .12 ct round, natural rubies for a total of .60 ctw. Then there is a total of four .125 Ct round, natural diamonds for approximately .50 ctw of diamonds. The color of these gemstones is beautiful! The rubies are bright red, not dark and the diamonds are I. The setting for this elegant wrap is solid 14K white gold. The natural opening of the ring is 6 mm but it can be pushed apart or pushed together slightly to accomodate different sizes of solitaires. The ideal range will be somewhere around .75-1.25 CT. The solitaire in the picture is a 1 CT. It is not a real diamond and the only one I have is yellow gold but you can get an idea of the size with it. The wrap weighs 5.4 grams and is a size 6, sizable by your local jeweler.