NATURAL TOURMALINE SPECIMEN FOR JEWELERY 40 CTS FP 382

Item Information

Dimensions (mm) not provided
Weight (carats) not provided
Colors
Certified Gemstone

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: 32 X 19 X 9 MM APPROX. 

WEIGHT: 40 CTS APPROX.

3d 14h 13m 57s

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Auction ID 9385
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Starts 2nd Dec 2016 7:12am PST
Ends 9th Dec 2016 7:08am PST

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