Opal Belemnite - Ancient Sea Creatures Turn Into Gemstones
Every serious opal enthusiast wants to have an opalized belemnite fossil in their opal collection. Belemnites are ancient Cephalopods from around 100 million years ago.
Opal Found On Mars
First NASA discovered Opal on Mars and now they have confirmed there is evidence of flowing water on the planet. Find out how the two are related.
The Dangers Of Cutting Opal - Hobby Opal Cutters Must Read Before Cutting Opals
Opal Cutting Can Be Fun But The Dangers Of Cutting Opal Should Be Understood. Hobby Opal Cutters Must Read Before Cutting Opals