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26 Σεπ 2024 · Tourmaline is a borosilicate mineral with piezoelectric and thermoelectric properties. The name “tourmaline” is derived from the Sinhalese word “turamali”, meaning “stone of mixed colors”, which complements its varied hues.
1 Ιουλ 2024 · Tourmaline is a fascinating gemstone that is known for its wide range of colors and unique properties. It is a crystalline mineral composed of complex borosilicate compounds and belongs to the cyclosilicate mineral group.
The wide range of compositions and color zoning within crystals causes tourmaline to occur in more colors and color combinations than any other mineral group. Tourmaline is one of the world's most popular gemstones and it serves as a birthstone for the month of October.
Tourmaline (/ ˈtʊərməlɪn, - ˌliːn / TOOR-mə-lin, -leen) is a crystalline silicate mineral group in which boron is compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. This gemstone comes in a wide variety of colors.
Gemologists use a tourmaline’s properties and chemical composition to define its species. The major tourmaline species are elbaite, liddicoatite, dravite, uvite, and schorl. Most gem tourmalines are elbaites, which are rich in sodium, lithium, aluminum, and sometimes—but very rarely—copper.
26 Ιουλ 2022 · Discover the origins, properties, and varieties of tourmaline, and learn the best locations to find this colorful gemstone. Whether you're a seasoned collector or just starting out, our guide has everything you need to add tourmaline to your collection today.
Tourmaline: A Gemstone Spectrum. Brian C. Cook. Tourmalines have a variety of exciting colors with one of the widest color ranges of any gem species, occurring in various shades of virtually every hue.
