Thunderegg oval flat beads (ETB00455) Variegated Jasper or a rock composed largely

or a rock composed largely of pectolite

Rainbow Obsidian is black obsidian that

Although the mine is not discontinued

it is just an approximation

This fancy gemstone has indeed inspired creativity in many artists

Thunderegg oval flat beads (ETB00455) Variegated Jasper or a rock composed largelyThunderegg A thunderegg (or thunder egg) is a nodule like geological structure, similar to a geode, that is formed within a rhyolitic lava flow. Thundereggs are rough spheres, most about the size of a baseballthough they can range from less than an inch to over a meter across. They usually contain centres of chalcedony in the form of agate, jasper or opal,[1] either uniquely or in combination. Also frequently encountered are quartz and selenite