In the Middle Ages, opal was considered a stone that could provide great luck because it was believed to possess all the virtues of each gemstone whose color was represented in the color spectrum of the opal.
Ethiopian opal, found mostly in the form of nodules, was of volcanic origin and was found predominantly within weathered layers of rhyolite.

Specifications:

Opal Stone Width : 10mm x 8mm
Band Width: top-11mm bottom- 6mm
metal: 925 Sterling Silver
Yellow gold plating
Size: 7.5 (O)