PARAIBA TOURMALINE RARE VVS QUALITY 3 CTS TBG-12

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About This Auction		About This Seller: TRUEBLUEGEMS
Minimum Bid (USD)		Feedback Rating	100.00% Positive
Current Bid (USD)	0.00	Member Since	August 13, 2008 in Australia
Bid Increment	1	View feedback Send seller message View 27 other auctions from this seller More about this seller
Bids Placed	0
Starting Bid (USD)	90.00
Reserve Price (USD)	none
Starts	January 8, 2009 9:05 PM
Ends	January 9, 2009 9:00 PM	Basic Shipping Information
Auction Category	Tourmaline Gemstones > Rough	Shipping Cost	3.00 paid by buyer
Auction ID	63510	Shipping Insurance (optional)	5.00
Ends in 21 hours 37 minutes
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Description

RARE PARAIBA

TOURMALINE ROUGH

BRAZIL

PRETTY BLUE COLOUR

NOT TREATED IN ANY WAY

NATURAL PC

WEIGHT : 3 CTS APPROX.

SIZE: 12 X 9 X 4 MM APPROX.

RARE Paraiba tourmaline rough

These cupriferous tourmalines from the Mina da Batalha in the Federal Brazilian State of Paraiba are small, rare and precious. Their spirited turquoise to green colours are such as are not found in any other gemstone in the world. The exclusiveness of this legendary find makes these rare gemstones real treasures.

Normally, iron, manganese, chrome and vanadium are the elements responsible for the beautiful colouring in tourmalines. The Paraiba tourmaline is different: it owes its splendid colour to copper, an element which has never before been observed in a tourmaline. Indeed quite a fair proportion of its weight consists of copper. But scientists have discovered that it often also contains manganese.

In the Paraiba tourmaline, the interplay between these two elements gives rise to a variety of fascinatingly beautiful colours: emerald green, turquoise to sky blue, sapphire blue, indigo, bluish-violet, and purple.

Some top stones have sold for over 50,000 per carat

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