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3.38g Fine Emerald Green Obsidian Pre-Shaped Facet Gem Rough

Listed In Category: Jewelry & Accessories > Loose Gems
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Classified Id HRKQMXEJ
Asking Price $ 35.00 USD per item
Quantity 1 item (new condition)
Tax Taxes are not applicable
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Seller will ship worldwide
$5.50 USA / Insurance Optional
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Renewed Date16-Dec-2014 09:44:52 PM EST
Expiration Date 14-Feb-2015 09:44:52 PM EST
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Seller Information
Ncgems member since 13-apr-2008
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View Greenville Classifieds Greenville, South Carolina, USA
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Classified Details
  UP FOR YOUR CONSIDERATION IS ONE 16.87ct (3.38g) BEAUTIFUL EMERALD GREEN OBSIDIAN FACET GEM ROUGH PRE-SHAPED OVAL, 16 x 12 x 11 (approx.)

Green Obsidian is a very beautiful gemstone, and its popularity is growing.

Here is a spectacular natural untreated top emerald green obsidian facet gem rough that has been pre-shaped with a pavilion (underside) and the table-top (crown), but with no bezel cut. This stone has been has been cut on a lathe and not faceted. Great facet grade gem rough for a lapidary or the collector like me. This not "CZECHOSLOVAKIAN MOLDAVITE" and should not be considered as. Green Obsidian is colored by chromium rather than iron like with Moldavite! This facet gem rough has a phenomenal well saturated fine emerald green color, an exceptional face up appearance and a very gemmy eye appeal! Picture of the faceted stone is what this material looks like when faceted, so as mentioned, it is a phenomenal stone. One note in this regard: a few years ago, after the Mt. St. Helen's volcanic eruption in the US, a "gem" marketed as "Helenite" was purported to be a man-made glass produced from the ashes of that eruption. This goes with the "African Modalvite" as well. Although there have been a lot of discussions, pro and con, most experts, based on lab tests, feel that little if any of the actual ash was used. Attempts to produce glass using this ash under controlled conditions did not result in the high transparency or emerald green color of the "Helenite" being sold. I don't see a lot of it for sale anymore, but it still crops up now and then, sometimes at rather high prices.

Obsidian is natural volcanic glass. It is found in regions of current and past volcanic activity so it is widespread. When ejected lava cools too rapidly for significant crystallization to occur, the result is an amorphous, silicon dioxide glass. Ranging from transparent to opaque, it is most commonly found in darker colors of black, gray and brown. There are small amounts of red, blue, green and yellow material as well, though more rare or uncommonly known of. A range of included crystals of other minerals, and inclusions such as bubbles create a host of colors, markings and phenomena. Surface sheen as in "velvet obsidian", iridescence as in "rainbow obsidian" and distinctive markings such as the lacy white cristabolite crystals which give the name to "snowflake obsidian" are examples. One item in virtually every rockhound's collection is a sample of "Apache Tears" which are obsidian nodules, the weathered cores of once larger pieces. Truly impressive material!

Happy shopping! We are not new in the gem trade or auctioneering. We offer all natural gemstones, gem carvings, & facet/cab/specimen grade gem rough, with full disclosure of any enhancements known. We also offer excellent service in all aspects, secure packaging, and fast shipping. You will not be disappointed with this very fine gem!! Please realize that colors can slightly differ from monitor to monitor or with change of lighting (natural, fluorescent, full spectrum, or incandescent).

***IF YOU WANT YOUR ORDER INSURED, PLEASE REQUEST THIS BEFORE INVOICING SO IT CAN BE ADDED ACCORDINGLY TOWARD THE INVOICE TOTAL BEFORE YOUR PAYMENT IS SENT (SEE BELOW)***

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