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That is one beautiful, big stone!  Congratulation on a very nice find Grubstake.

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MY GOD that huge emerald is righteous. Being my birthstone I'm very partial to their amazing color. I have a few but nuttn' even close to that-thanx for pic as dazzlers are a great way to start the day-John

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1 hour ago, El Dorado said:

The more and more I look at that ring, I think the green stone is a  Chrome green Tourmaline

Could be...Jenny G Jewelry is made in China & most of their stuff is gold-filled & sells dirt cheap on eBay. Very nice ring design though!

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Mount St. Helens produces a stone being utilized in China, and all over the world now, as righteous emerald color and clarity also. Named ??? :old: senior moment hahahaha -John

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Helenite hope I can paste wikapedia-


From Wikipedia, the free encyclopedia
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Emerald obsidianite set in an earring

Helenite, also known as Mount St. Helens obsidian, emerald obsidianite, and ruby obsidianite, is glass made from the fused volcanic rock dust from Mount St. Helens and marketed as a gemstone. Helenite was first discovered accidentally after the eruption of Mount St. Helens in 1980. Workers from the Weyerhaeuser Timber Company were attempting to salvage equipment damaged after the volcanic eruption. Using acetylene torches, they noticed that the intense heat was melting the nearby volcanic ash and rock and turning it a greenish color. The silica, aluminium, iron, and trace amounts of chromium and copper present in the rocks and ash in the area, combined with the heat of the torches, transformed the volcanic particles into a compound that would be later commercially replicated as helenite.

As word of the discovery spread, jewelry companies took note and began to find ways to reproduce the helenite. Helenite is made by heating rock dust and particles from the Mount St. Helens area in a furnace to a temperature of approximately 2,700 °F (1,480 °C). Although helenite and obsidian are both forms of glass, helenite differs from obsidian in that it is man-made. The stone has been marketed by the jewelry industry because of its emerald-like color, good refractive index, and durability. It is seen as an inexpensive alternative to other naturally occurring green gemstones like emerald and peridot. Helenite can also come in various red, green and blue varieties.

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