San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid gemmy color Geode Locale: High Atlas Mountains

Locale: High Atlas Mountains

it makes up for in form

There are quite a few colors and varieties of picture jasper

but I suspect many of the breaks are natural based on how few intact pieces I have ever seen

but an aggregate of small shard-like pieces

San Carlos peridotite with chrome diopside and spinel in volcanic basalt, vivid gemmy color Geode Locale: High Atlas MountainsLocale: San Carlos Apache Reservation, Arizona Approx dimensions: 3 x 2 x 1. 5" Approx weight: 220g While this material is commonly called peridot in (or on) basalt, it is actually more complex. It would be more accurately called a peridotite xenolith in basalt. Peridot is the gem quality version of the mineral olivine, which is common in our Earths upper mantleand even in space. In comparison, peridotite is a combination of several types of minerals