The color! A crazy violet, purple and chocolate brown landscape exists in this boulder opal. I've set it in oxidized sterling silver and added some gold accents along the upper edge. Along the lower edge--amethyst, lapis lazuli, tanzanite and brown tourmaline on 14k gold do their frilly, romantic thing. The chain adjusts from 17 to 19 inches with a a whiskey quartz briolette accent on the extender chain.