This koroit boulder opal reveals lavender, rose, ultra violet and indigo within the brown matrix. It is wrapped in silver and a lush fringe of tanzanite, blue topaz, apatite and iolite to frame the lower edge with color and movement. The argentium sterling silver is give a soft brushed finish. The simple band measures a size 7. I can enlarge up to a 7 1/2--please inquire.