6x4 MM Octagonal Shape Blue Topaz and 1/6 Ctw Round Cut Diamond Halo Semi-Precious Ring in 10K Yellow GoldA beautiful Semi Precious fashion ring, this makes for a quick buy. It is simple but elegant, which is why it easily pleases the eye. The ring features an octagonal shape center mount that houses a 6x4 MM blue topaz, haloed by round cut diamonds. There are a total of 18 micro wall set round cut diamonds surrounding the center stone. The precious fashion ring is molded in a polished finish 10 karat yellow gold. Total diamond weight is 1 6 Ctw.