A violet heart cut from the stone that carries centuries of quiet association

A display sphere that repays the attention you give it—the light changes with every shift of angle

An ancient organic gem

and Afghanistan

Blue Opal Sterling Silver Pendant Sleep A violet heart cut fromA blue opal cabochon set in solid . 925 sterling silver. Opal is hydrated silicaa non crystalline mineraloid that can hold up to a fifth of its weight in water. This blue variety, much of it from the Andes of Peru, is a common opal: it carries a soft, milky blue green from traces of copper minerals rather than the flashing play of color of precious opal. The color runs evenly through the stone, cut and polished to a smooth domed cabochon and set in a