(MGW) TOURMALINE SPECINE 4GMS/ 20 CTS FP 739

Item Description Pictures Bidding History Comments

About This Auction		About This Seller: mineralgemworld
Minimum Bid (USD)		Feedback Rating	99.85% Positive
Current Bid (USD)	0.00	Member Since	September 1, 2007 in Australia
Bid Increment	1.00	View feedback Send seller message View 2879 other auctions from this seller More about this seller
Bids Placed	0
Starting Bid (USD)	40.00
Reserve Price (USD)	none
Starts	January 6, 2009 7:35 AM
Ends	January 13, 2009 7:34 AM	Basic Shipping Information
Auction Category	Tourmaline Gemstones > Rough	Shipping Cost	3.00 paid by buyer
Auction ID	10211	Shipping Insurance (optional)	7.00
Ends in 4 days 10 hours 44 minutes
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Gallery

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Description

TOURMALINE SPECIMEN

THIS IS A TOURMALINE IN ITS NATURAL HOST ROCK. IT HAS BEEN GROUND AWAY SO IT CAN BE USED AS A SPECIMEN OR AS A PENDANT. THIS SPECIMEN WAS MINED IN BARZIL.TOURMALINE HAS A WIDE VARITY OF COLORS. USUALLY, IRON-RICH TOURMALINES ARE BLACK TO BLUISH-BLACK TO DEEP BROWN, WHILE MAGNESIUM-RICH VARIETIES ARE BROWN AND YELLOW, AND LITHIUM-RICH TOURMALINES ARE PRACTICALLY ANY COLOR: BLUE, GREEN, RED YELLOW, AND PINK ETC. RARELY IT IS COLOURLESS. BI-COLORED AND MUTLICOLORED CRYSTALS ARE RELATIVELY COMMON. REFLECTING VARIATIONS OF FLUID CHEMISTRY DURING CRYSTALLISATION. CRYSTALS MAY BE GREEN AT ONE END AND PINK AT EH OTHER, OUR GREEN ON THE OUTSIDE AND PINK INSIDE: THIS TYPE IS CALLED WATERMELLON TOURMALINE. SOME FORMS OF TOURMALINE ARE DICHROIC, IN THAT THEY APPEAR TO CHANGE COLOR WHEN VIEWED FROM DIFFERENT DIRECTIONS.

SIZE: 22 X 15 X 7 MM APPROX.

WEIGHT: 4 GMS/ 20 CTS APPROX.