Largest Freeform Black Opal In The World Radiant with a rainbow of color & very close to twelve inches along the bottom, the huge carving weights Kg or carats, making it the largest free form black opal in the world.
Natural Blue Obsidian (raw) Obsidian is a very special stone. It is not a true mineral. It is actually a volcanic glass that forms when molten lava cools too rapidly to crystallize. It consists mostly of Silicon Dioxide.
"Light of the Desert", the world's largest faceted Cerussite gem carats), Royal Ontario Museum. Cerussite is one of the only gems with adamantine (diamond-like) luster. Very fragile. ITS THE ARKENSTONE!
HUGE Ethiopian Welo Rough Opal Specimen Bright Fire RARE FIND! MUST SEE! #839
2005 winner of the American Gem Trade Association's Best of Show Annual Spectrum award for gemcutting - a spirographic cut mint-green beryl with a concave pavilion and flat faceted crown by Dalan Hargrave and Stephanie Michael Young.
Fordite: an anthropocenic mineral "formed from the built up of layers of enamel paint slag on tracks and skids on which cars were hand spray-painted (a now automated process), which have been baked numerous times.