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. It is essentially glass, which is made by heating "rock dust" from the Mt. Saint Helens area, in a furnace, to a temperature of approximately 2700 degrees F. The rock dust was reportedly emitted from Mt. St. Helens during the May 1980 eruption.

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  • 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. It is essentially glass, which is made by heating "rock dust" from the Mt. Saint Helens area, in a furnace, to a temperature of approximately 2700 degrees F. The rock dust was reportedly emitted from Mt. St. Helens during the May 1980 eruption. In spite of its nicknames, helenite is synthetic glass and not obsidian, since obsidian is a natural glass created by volcanoes. Helenite comes in various red, green and blue varieties.
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  • 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. It is essentially glass, which is made by heating "rock dust" from the Mt. Saint Helens area, in a furnace, to a temperature of approximately 2700 degrees F. The rock dust was reportedly emitted from Mt. St. Helens during the May 1980 eruption.
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  • Helenite
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