Opal Gem Jar roughly 150 million years ago

roughly 150 million years ago

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

there is some feeding wear and damage to the tip of the tooth

sweetgrass

Opal Gem Jar roughly 150 million years agoOpal 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