Serene periwinkle and sky blue swirls float across this boulder opal. I've set it in argentium sterling silver for tarnish resistance and added a fringe of sky blue topaz, tanzanite and swiss blue topaz. The chain adjusts from 17 to 19 inches with a faceted blue topaz briolette to accent the extender chain. The pendant measure 1 1/4" vy 5/8".