|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
TOURMALINE MUSHROOM ROUGH
This is a natural untreated rough tourmaline crystal .It has a red purple body colour with a dark top line.It is ready for cutting or great for any collection
Mohs scale 7-7.5
Weight 31.80 cts app
Size 19.2 x 19.9 x 18.8 mm
Mined in Brazil
Photo has been taken with the stone dry.
We have some cut multi coloured stones in our sister site SEDAGEMS on this site under tourmaline.
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||4th Dec 2016 4:02pm PST|
|Ends||7th Dec 2016 4:00pm PST|
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