Mexican Aragonite Amber Each specimen measures approx

Each specimen measures approx

Diplomystus is an extinct genus of freshwater clupeomorph fish distantly related to modern-day extant herrings

distinctive head crest the Pteranodon was a giant

between 144 to 65 million years ago

Mexican Aragonite Amber Each specimen measures approxApprox. dimensions: 6. 5" x 5" x 2. 5" Aragonite is a common carbonate mineral. It is unfortunately often thought of as the poor cousin to calcite. But aragonite is an interesting and attractive mineral in its own right. It forms interesting habits and can have a soft pretty color. Its modes of formation and relationship to calcite are both curious and intriguing. Aragonite is a polymorph of calcite, which means that it has the same chemistry as