51 CTS :AGED "BI COLOURED TOURMALINE [MGW2467 ]

Item Information

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

TOURMALINE ROUGH SPECIMEN

 

  This  rough specimen has been weathered has two of the most sought after colours in Tourmaline GREEN and PINK

TOURMALINE BIRTHSTONE FOR OCTOBER.

NATURAL UN HEATED

MINED IN BRAZIL 

 

MOHS SCALE 7-7.5

WEIGHT  51.55 CTS

SIZE 30x17x12  MM

 

 

 

 

 Tourmaline is a crystal silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline gem stones come in a wide variety of colors.Tourmaline has a variety of colors. Usually, iron-rich tourmalines are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmalines are almost any color: blue, green, red, yellow, pink etc. Rarely, it is colorless. Bi-colored and multicolored crystals are common, reflecting variations of fluid chemistry during crystallisation. Crystals may be green at one end and pink at the other, or green on the outside and pink inside: this type is called watermelon tourmaline. Some forms of tourmaline are dichroic, in that they change color when viewed from different directions.

$95.00 USD

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Pricing & Details

Auction ID 306701
Watchers 4 watching
Viewed 1,369 times
Starts 29th Oct 2012 10:58pm PDT

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