This is a Geo

This one had the outer stone remove.

 'geode' originated from a Greek term meaning 'shape of the earth'

Geos are round or oval rocks found at in streams or mountains On the outside, all geodes appear to be nothing but rock, round or oval shaped
 Geode crystals are usually composed of Amethyst, Agate and many other quartz or chalcedonic deposits,
but various other minerals such as calcite,

Geodes can be found all around the world, but they are mostly
located in deserts and volcanic regions.
Geodes are especially abundant throughout America including California, Illinois,
Nevada, Arizona, Missouri, Kentucky, Utah, Iowa, Africa  and around the world .

Many geode specimens have been estimated to be over
250 million years old

You don't know what's inside until it's opened!

Large crystals are hard to come by as the ones

we offer for sale in the jewelry we sell

We have seen HUGE GEO's ( as large as 36" dia.) cut in have for coffee tables. Also, oval shaped as tall as 40". Needless to say these run into the $1,000. or more. These pieces are a beautiful rarity.