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The color change from red to green is due to strong absorption of light in a narrow yellow portion of the spectrum, while allowing large bands of more blue-green and red wavelengths to be transmitted. Which of these prevails to give the perceived hue depends on the spectral balance of the illumination.
Mexican amber is mainly recovered from fossil bearing rocks in the Simojovel region of Chiapas, Mexico. It is one of the main minerals recovered in the state of Chiapas, much of which is from 15 to 23 million years old, with quality comparable to that found in the Dominican Republic. Chiapan amber has a number of unique qualities, including ...
The intense blue color is due to the presence of the trisulfur radical anion (S •− 3) in the crystal. [16] The presence of disulfur (S •− 2) and tetrasulfur (S •− 4) radicals can shift the color towards yellow or red, respectively. [17] These radical anions substitute for the chloride anions within the sodalite structure. [18] The S ...
The imperial historian Gan Bao's c. 350 CE Soushen Ji ("In Search of the Supernatural") has two grateful-animal stories involving luminous pearls/gems. The first involves a black crane; according to legend, when a crane has lived a thousand years it turns blue; after another thousand it becomes black and is called a xuanhe (玄鶴. "dark crane").
Tavernier Blue; Taylor-Burton Diamond; Uncle Sam (diamond) Colored diamond - dab - Colored diamonds, Fancy diamonds, Fancy diamond, Fancy color diamonds, Fancy color diamond, Fancy colored diamonds, Fancy colored diamond, Coloured diamond, Coloured diamonds, Fancy colour diamonds, Fancy colour diamond, Fancy coloured diamonds, Fancy coloured ...
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Blue amber is a rare variety of amber resin that exhibits a blue coloration. Blue amber has been most commonly found in the Dominican Republic —especially in the amber mines around the city of Santiago and, less commonly, in the eastern half of the country.
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