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Other varieties of color-changing garnets exist. In daylight, their color ranges from shades of green, beige, brown, gray, and blue, but in incandescent light, they appear a reddish or purplish/pink color. [25] This is the rarest type of garnet. Because of its color-changing quality, this kind of garnet resembles alexandrite. [26]
Pyrope garnet in eclogite - Shibino, Ural Mountains, Russia. The mineral pyrope is a member of the garnet group. Pyrope is the only member of the garnet family to always display red colouration in natural samples, and it is from this characteristic that it gets its name: from the Greek words for fire and eye.
Used as a dye, the colour shifts from blue (peak absorption at 590 nm, which is yellow-orange) to reddish-purple (peak absorption at 520 nm, which is green). [22] It is believed that the intensity of the purple hue improved rather than faded as the dyed cloth aged. Vitruvius mentions the production of Tyrian purple from shellfish. [23]
The colors from different rhodolite sources may vary from a lavender pink to raspberry rose or raspberry red and from purplish-violet (grape) to purplish red. [ 5 ] The color of rhodolites, combined with their brilliance, durability, and the accessibility of stones with no visible inclusions have brought about some demand for the stone in the ...
Acid orange 6 Food yellow 8 14270 azo 547-57-9: Tropaeolin OO Fast yellow Acid orange 5: 13080 azo 554-73-4: Tropaeolin OOO2 Orange II 2-napththol orange Acid Orange 7: 15510 azo 633-96-5: Trypan blue: Niagara blue 3B Direct blue 14 23850 diazo 72-57-1: Tyrian purple: Phoenician red Natural violet 1 75800 natural 19201-53-7: Uranin ...
Crimson is a deep red dye or color derived from the word kermes. [14] [15] [16] crottle Crottle is a traditional Scottish dye derived from lichens of the genus Parmelia, Parmelia saxatilis and Parmelia omphalodes, which give deep red- or purple-brown and rusty orange respectively. [17]
Almandine (/ ˈ æ l m ən d ɪ n /), also known as almandite, is a species of mineral belonging to the garnet group. The name is a corruption of alabandicus, which is the name applied by Pliny the Elder to a stone found or worked at Alabanda, a town in Caria in Asia Minor. Almandine is an iron alumina garnet, of deep red color, inclining to ...
Charoite is translucent lavender to purple in color with a pearly luster. Charoite is strictly massive in nature, and fractures are conchoidal.It has an unusual swirling, fibrous appearance, sometimes chatoyant, and that, along with its intense color, can lead many to believe at first that it is synthetic or enhanced artificially.