a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones
A family of aluminum and boro silicate minerals that comes in a wide variety of colors depending what other trace minerals are present. Can be found in pinks, greens, blues, yellows and oranges, as well as black. Often bi-colored or tricolored. Sometimes displays plieochroism or chatoyancy. Tourmaline has a hardness of 7-7.5.
Is know for having the greatest natural color range of any gemstone. Tourmaline is a Dichroic gemstone that appears to have different colors depending on the angle at which it is seen.
perhaps the most complex family of gemstones due to its wide variation in color and transluscence and unusual chemical complexity. Appearing in many colors from blue through red to green and yellow. Can be transparent or translucent.
Na(Mg,Fe) Al(BO)(Si6O 18)(OH). A compositionally variable mineral found as an accessory in pegmatites and some hydrothermally altered rocks. See also the field guide entry for tourmaline.
(TOOR-muh-len) Tourmaline is an unusual gemstone that comes in many, many different colors, ranging from pink to green to red to purple to blue-green to colorless to black. Some versions, such as watermelon tourmaline are both pink and green. Because this stone is doubly refractive, it has a brilliant sparkle and can seem to change color as one's viewing angle changes. Generally speaking, the lighter colors of this gem are more valuable than the darker tones. Tourmaline measures 7-7.5 on the Mohs hardness scale.
Tourmaline can be found in more colors than any other stone. Although this gem occurs readily in many colors, heat can also be applied to tourmalines to lighten, or enhance, the existing hue of the gem. Rarely, a "cat-eye" shape is formed in tourmalines by naturally occurring inclusions.
A crystalline mineral used as a gemstone. Tourmaline typically comes in a variety of colors, the most common being black.
Quite a trickster in the gem world, tourmaline can be mistaken for many other stones, from rubies to emeralds. It can bear almost any colour and translucency known to man. See tourmaline pieces here
A group of hard, glassy minerals used in optical and electrical equipment and in jewellery.
Tourmaline was unknown to ancient magician, but is a nevertheless a unique stone in many ways. The stone is transparent when viewed from the side of the crystal, yet opaque when viewed from either end. When heated or rubbed to create friction, it polarizes; that is, one end will become positive and attract ashes or light straws, the other negative. It comes in many colours to which each has its own specific uses. Pink tourmaline is receptive and draws love and friendship and to promote sympathy to others. Red tourmaline is projective and is worn to lend energy to the body. Worn, it promotes courage. Green tourmaline is receptive and is used to draw money and success in business. It will also stimulate creativity. Blue tourmaline is receptive and will de-stress you and promote peace and a restful sleep. Black tourmaline is usually too brittle for jewelry but is good in earth spells. Watermelon tourmaline consists of an interior or red or pink encased in green tourmaline. It gives the appearance of a sliced watermelon. It is worn to balance the projective and receptive energies within the body. Tourmalated tourmaline is receptive and is worn to promote astral projection.
(1759, apparently derived from the Sinhalese turamali, referring to mixed-colour gems of unknown identity) A stone of variable colour that makes a striking gem when transparent and cut. The pink (rubellite), blue (indicolite) and the more common green are the most popular varieties.
A gem best known for its green and pink stones.
A family of gems which ranges from transparent to opaque and which exists in a very large number of colors.
One of nature's most naturally energizing minerals, finely-powdered tourmaline boosts skin's energy and radiance, creating a more potent bioenergy field for our Tourmaline Charged cleanser, cremes, masques and serums.
Tourmaline is a dichroic gemstone that comes in many, many different colors; it also appears to have different colors depending on the angle at which it is seen. Tourmaline has the greatest color range of any gemstone - the lighter colors are more valuable than the darker colors. It ranges in color from pink to green to red (rubellite) to purple to blue-green (indicolite) to colorless (achroite) to black. Watermelon tourmaline is both pink and green. Tourmaline occurs as an elongate three-sided prism and is mined in Brazil, The Ural mountains in Russia, Namibia, Sri Lanka, and California. Tourmaline was only discovered in the 1700's. Tourmaline has a hardness of 7-7.5 and a specific gravity of 3.02-3.25. It is doubly-refractive.
A crystalline mineral, which is used as a gemstone. It typically comes in a variety of colors, the most common of which is black.
a chemically complex mineral found in granite and pegmatite. Tourmaline is chiefly a silicate of boron and aluminum with varying amounts of other elements, especially iron, calcium, and sodium. It may be black, brown, red, pink, green, blue, or yellow, and some varieties are used as semiprecious gemstones. [AHDOS
The tourmaline mineral group is chemically one of the most complicated groups of silicate minerals. It is a complex silicate of aluminium and boron, but because of isomorphous replacement (solid solution), its composition varies widely with sodium, calcium, iron, magnesium, lithium and other elements entering into the structure.
