70 CTS TOURMALINE MUSHROOM SPECIMEN BURMA [MGW2472]

Item Information

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

MINERAL GEM WORL D

TOURMALINE MUSHROOM  SPECIMEN

 

This is a fine tourmaline crystal mined in tje  Molo district in Burma showing an interesting botryoidal shape   

TOURMALINE BIRTHSTONE FOR OCTOBER.

NATURAL UN HEATED

MOHS SCALE 7-7.5

WEIGHT 70.67   CTS

SIZE 25x24x14 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.

$85.00 USD

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Pricing & Details

Auction ID 306715
Watchers 4 watching
Viewed 1,437 times
Starts 29th Oct 2012 11:13pm PDT

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