Opal Gem Jar Average Weight: ~5 ozSpecies: Mepygurus

Average Weight: ~5 ozSpecies: Mepygurus marmontiLocation: MadagascarYou will receive one (1) fossil similar to the ones pictured

This caused a significant decrease in the mammoth population

The largest two fragments

roughly 150 million years ago

Weight: ~18 oz

Opal Gem Jar Average Weight: ~5 ozSpecies: MepygurusOpal is a form of amorphous silica. This means it forms with no true crystal structure. Opal can naturally contain up to 20% water. Opal is not a mineral, but a mineraloid because of its lack of structure. On a microscopic scale, opal contains spheres of silica, giving rise to the flashes of color we all know and love. The matrix associated with opal can be almost any visible color, most commonly white, occasionally black. Opal is used in helping