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Difference between revisions of "Earthlike Gems"
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'''Cymophane''' is a type of chrysoberyl with a yellow to brown color range and pronounced chatoyance, sometimes known as '''cat's eye'''. | '''Cymophane''' is a type of chrysoberyl with a yellow to brown color range and pronounced chatoyance, sometimes known as '''cat's eye'''. | ||
'''Demantoid''' is a type of garnet stone rich in calcium. The yellow variant is derived from traces of iron in the stone, while the green variety derives its color from chromium. | |||
'''Emerald''' is a type of beryl stone with an ubiquitous green coloration lessened or intensified by traces of chromium or vandium. | '''Emerald''' is a type of beryl stone with an ubiquitous green coloration lessened or intensified by traces of chromium or vandium. | ||
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'''Onyx''' is a type of chalcedony very similar to agate, with parallel striation bands, usually white or black against the color of the stone, which is most commonly found in black, yellow, green and red. If the striations are red, the variety of stone is called '''sardonyx'''. | '''Onyx''' is a type of chalcedony very similar to agate, with parallel striation bands, usually white or black against the color of the stone, which is most commonly found in black, yellow, green and red. If the striations are red, the variety of stone is called '''sardonyx'''. | ||
'''Red Beryl''' is a type of beryl with a dark red hue attributed to traces of | '''Opal''' is a type of silica crystal that can be found in almost any color, with a natural iridescence. There are a number of opal variants, including the clouded white '''milk opal''', '''pinfire opal''' with its fine iridescence, scarlet '''fire opals''', honey-hued '''resin opal''', opalized fossils called '''wood opal''', gray '''menilite''' and transparent '''hyalite'''. Manufactured opals are called '''opalite'''. | ||
'''Peridot''' is type of olivine stone rich in magnesium, whose yellow-green color is derived from traces of iron. | |||
'''Red Beryl''' is a type of beryl with a dark red hue attributed to traces of manganese. It is also known as '''bixbite'''. | |||
'''Rose Quartz''' is a type of quartz stone with hues ranging from pale pink to rose red, caused by trace amounts of metals in the crystal. Rarely, traces of rutile in a rose quartz can cause an optical asterism to appear in the cut stone. | '''Rose Quartz''' is a type of quartz stone with hues ranging from pale pink to rose red, caused by trace amounts of metals in the crystal. Rarely, traces of rutile in a rose quartz can cause an optical asterism to appear in the cut stone. | ||
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'''Tiger Iron''' is a type of rock composed of tiger's eye, red jasper and black hematite forming in undulating striations of contrasting colors. An accepted in-world name is '''Tigrid's Iron'''. | '''Tiger Iron''' is a type of rock composed of tiger's eye, red jasper and black hematite forming in undulating striations of contrasting colors. An accepted in-world name is '''Tigrid's Iron'''. | ||
'''Topaz''' is a aluminum fluoride crystal that ranges from colorless to pale blue, golden brown or orange, though radiation treaments can produce a deep blue, pale green, or pink-violet hue. | |||
'''Tourmaline''' is a type of is a silicate stone composed of sodium, lithium, aluminum and borox, with a number of differently colored varieties; '''achroite''' is colorless, '''rubellite''' is red, '''indicolite''' is blue or blue-green, '''verdelite''' is green, '''schorl''' is brownish black, '''dravite''' is dark yellow to brown, and watermelon tourmaline has a red-green gradient (an acceptable in-world name is '''pawke tourmaline''' ) | |||
'''Vermarine''' is a type of quartz stone, also known as '''prasiolite''', that has traces of silicon dioxide that offer the stone a varied green palette, from pale green to forest green. Cloudy impurities can occlude the stone with a milky color. | '''Vermarine''' is a type of quartz stone, also known as '''prasiolite''', that has traces of silicon dioxide that offer the stone a varied green palette, from pale green to forest green. Cloudy impurities can occlude the stone with a milky color. | ||