1) Beautiful stone 2) Decorative stone 3) Expensive rock 4) Gemstone 5) Precious rock 6) Prized stone 7) Precious jewel 8) Precious stone 9) Precious gemstone 10) Prized mineral 11) Precious gem 12) Rock gem 13) Rock turned gem 14) Rock gemstone 15) Rock turned gemstone 16) Stone found in jewelry
Found on
https://www.crosswordclues.com/clue/helenite
Helenite, also known as Mount St. Helens obsidian, emerald obsidianite, and ruby obsidianite, is a synthetic gemstone made from the fused volcanic rock dust from Mount St. Helens. Helenite was first discovered accidentally after the eruption of Mount St. Helens in 1980. Workers from the Weyerhaeuser Timber Company were attempting to salvage equipm...
Found on
http://en.wikipedia.org/wiki/Helenite
No exact match found.
