This is the polished on the one side brownish-yellow tourmaline specimen with lepidolite, quartz and feldspar. Dimensions: 2.2 x 2.1 x 1.1″ (5.7 x 5.3 x 2.7cm). Weight – 2.8oz (79 grams). Origin: Russia, Transbaikalia.
Some information about tourmaline:
In 1703, Dutch sailors first brought into Europe elongated crystals of purple-pink color. Following the inhabitants of Ceylon, they called these rocks «turemali» that are meaning is mineral, jewel. Thus arose the modern term tourmaline, which is called a variety of silicate, which includes compounds of aluminum, boron, manganese and magnesium.
Tourmaline stone features a large variety of colors. Ruby-red stones called rubellite, purple-red stones found in the Urals – siberite. Verdelite is green tourmaline, indigolite – blue. Yellowish-brown stones on the deposit Drava in Austria called dravite. Rare colorless crystals called ahroite. A very common black variety of tourmaline calls schorl.