- helenite
- геленит (разновидность озокерита)
English-Russian scientific dictionary. 2008.
helenite
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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, an American volcano located in the state of Washington. Helenite… … Wikipedia
