Tag: opal

Dino fossils trapped in gemstones reveal new insights about Cretaceous life.

Belemnites are an extinct order of cephalopods ("cephalo" meaning head and "pod" meaning leg) that lived during the Mesozoic era, ...

As a geologist, I'm not into gemstones and "pretty rocks" - but every once in a while, I see a ...

As a proud student in geophysics, I can tell you that opal is hydrated silicon dioxide mineral with many astounding ...