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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 and is prized in jewelry. An excellent example of watermelon tourmaline jewelry is a brooch piece (1969, gold, watermelon tourmaline, diamonds) by Andrew Grima (British, b.
Emeralds and other green gemstones like tourmaline, peridot, and jade correlate to the green color wavelength and heart chakra, so wearing stones of such color can amplify one’s heartfelt ...
Light blue to bluish green: Brazilian indicolite variety (from indigo) Green: Brazilian verdelite variety (from emerald) Watermelon tourmaline is a zoned variety with a reddish center surrounded by a green outer zone resembling watermelon rind, evident in cross-sectional slices of prisms, often displaying curved sides.
Paraiba Tourmaline has become one of the most popular gemstones in recent times thanks to its color and is considered to be one of the important gemstones after rubies, emeralds, and sapphires according to Gübelin Gemlab. Even though it is a tourmaline, Paraiba Tourmaline is one of the most expensive gemstones. [31]
Aquamarine is a pale-blue to light-green variety of the beryl family, [2] with its name relating to water and sea. [3] The color of aquamarine can be changed by heat, with a goal to enhance its physical appearance (though this practice is frowned upon by collectors and jewelers). [4]
Elbaite tourmaline (olive-green) and lepidolite mica (violet), from a lithium-enriched pegmatite in Brazil. Pegmatites are enriched in volatile and incompatible elements, consistent with their likely origin as the final melt fraction of a crystallizing body of magma. [5]
Kornerupine (also called Prismatine) is a rare boro-silicate mineral with the chemical formula (Mg,Fe 2+) 4 (Al,Fe 3+) 6 (SiO 4,BO 4) 5 (O,OH) 2.It crystallizes in the orthorhombic – dipyramidal crystal system as brown, green, yellow to colorless slender tourmaline like prisms or in massive fibrous forms.
Fluor-liddicoatite [7] is a rare member of the tourmaline group of minerals, elbaite subgroup, and the theoretical calcium endmember of the elbaite-fluor-liddicoatite series; the pure end-member has not yet been found in nature. [3]
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