|Dimensions (mm)||8 x 5 x 4mm|
|Weight (carats)||not provided|
This is a quality natural specimen of Uvite Tourmlaine whihc is extremly rare. It has a very strange crystal growth pattern for Tourmlaine. This is a great specimen for any collection.
TOURMALINE BIRTHSTONE FOR OCTOBER.
NATURAL UN HEATED
MINED IN BURMA
MOHS SCALE 7-7.5
WEIGHT 0.88 CTS
SIZE 8 x 5 x 4 MM
Tourmalines are a class 2 gemstone which means inclusions are acceptable
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.
|Starts||11th Jul 2013 9:02pm PDT|
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