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|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
TOURMALINE QUARTZ ROUGH.
Quartz is one of the most common minerals on the earth.This quartz has green/black needles of tourmalines making it a interesting item to cut or keep as a specimen.
Weight 115 cts
Size 37x 31 x22 mm app
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.
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