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• Jasper
  ...or carved cylinder seals and amulets. Egyptian jasper is a variety that is red with brown areas. It was primarily used in the Middle Kingdom period. Curre ...align|greenjasper632.jpg~Raman-green (U of Catania)|redjasper632.jpg~Raman-red (U of Catania)]]]
  3 KB (430 words) - 12:02, 3 January 2023
• Chrome orange
  ...widely used because of its sensitivity to sulfur gases. Most often, chrome red is used as an anticorrosive base coats for steel. See also [[chrome yellow] ...c lead (II) chromate; Pigment Orange 21 and 45; CI 77601; phoenicochroite (mineral); anaranjado de cromo (Esp.); Chromorange (Deut.); chromorange (Fr.); porto
  3 KB (374 words) - 14:22, 29 May 2022
• Moissanite
  ...was synthesized in the labs two years before the discovery of the natural mineral. Silicon carbide is resistant to thermal shock, thermal expansion, and high * Fluorescence = inert to orange-red
  2 KB (320 words) - 14:48, 24 January 2023
• Yttrium aluminum garnet (YAG)
  ...m aluminum garnet (YAG) is technically inaccurate, as garnet is a silicate mineral, but its properties are similar to garnets. Chemically, YAG is corundum (Al * red (manganese)
  2 KB (330 words) - 11:42, 4 January 2023
• Vermilion
  ...the vermilion. By the 20th century, vermilion was superseded by [[cadmium red]] for most applications. red mercuric sulfide; Pigment Red 106; CI 77766; cinnabar (mineral); Chinese vermilion (dry-process); English vermilion (wet-process); German
  6 KB (804 words) - 10:55, 1 March 2024
• Phenolphthalein
  ...a pH below 8.5, phenolphthalein is colorless and solutions above pH 9 are red.
  2 KB (299 words) - 08:20, 22 October 2022
• Chrysoberyl
  ...bochons]] and polished. The [[alexandrite]] variety of chrysoberyl appears red in artificial light and green in daylight. Chrysoberyls are found in the Ur ...green stone may show weak yellow under SW; 'mint' chrysoberyl shows strong red in LW
  3 KB (412 words) - 12:59, 23 December 2022
• Agate
  ...parallel. [[Sardonyx|Sardonyx]] is a variety of onyx that has alternating red and cream layers. [[Moss%20agate|Moss agates]] contain brown dendritic or f * Colors may include white, grey, light blue, orange, red, and black
  3 KB (446 words) - 12:05, 19 December 2022
• Zinc silicate
  A naturally occurring mineral that may be white, yellow, red, green, or brown depending on impurities. Hydrated zinc silicate ore, [[hem
  1 KB (196 words) - 11:22, 6 June 2022
• Wollastonite
  ...med for the English mineralogist William Wollaston in the early 1800s. The mineral is formed by the metamorphosis of siliceous limestones at high temperatures * Fluorescent. May be white, gray, yellow, red or brown.
  3 KB (336 words) - 11:47, 27 June 2022
• Strontium sulfate
  ...arium%20sulfate|barium sulfate]]. Currently strontium sulfate is used as a red colorant in pyrotechnics, [[ceramic|ceramics]], and [[glass|glass]].
  1 KB (201 words) - 12:31, 6 June 2022
• Benitoite
  ...e stones fluoresce bright to chalky blue in SW; colorless stones fluoresce red under LW ...itannica'', https://www.britannica.co,m/topic/Britannica-Online Comment: "Mineral." Accessed 12 May 2004 .
  2 KB (242 words) - 11:45, 17 December 2022
• Abrasive
  | Mineral | red
  7 KB (791 words) - 14:54, 2 September 2023
• Cinnabar
  ...iolet light, mercuric sulfide darkens as a portion changes from its normal red crystalline form to a black isomorph. This can result in splotchy discolora ...Fr.); Chinese vermilion; English vermilion; vermilion (synthetic pigment); red sulfuretted oxide of mercury; liver ore
  5 KB (620 words) - 10:52, 1 March 2024
• Hematite
  ...ly used for smelting iron. Hematite has been used since ancient times as a red pigment in paints and glazes. It was also used for seals, beads, and small ...e; red iron ore; bloodstone; iron oxide red; red iron oxide; ferric oxide, red ocher; black diamond; iron rose; kidney ore; martite; paint ore; specularit
  5 KB (643 words) - 14:43, 24 January 2023
• Egyptian blue
  ...a double silicate of calcium and copper that is chemically similar to the mineral [[cuprorivaite]]. Egyptian blue is prepared by heating a mixture of [[silic Pompeian blue; Pigment Blue 31; CI 77437; cuprorivaite (mineral); azul egipcio (Esp.); bleu égyptien (Fr.); bleu d'Alexandrie (Fr.); Ägyp
  4 KB (535 words) - 14:48, 28 February 2024
• Kyanite
  ...nic long-bladed crystals that appear fibrous or blade-like. It is a common mineral; most of the world's production is from mines in India, Kenya, Ural Mountai * Fluorescence = weak red under LW
  3 KB (419 words) - 12:11, 17 December 2022
• Corundum
  ...emstones since at least Hellenistic times. [[ruby|Rubies]] are transparent red corundum gems while transparent blue stones are called [[sapphire|sapphires emery (black); adamantine spar; ruby (red); sapphire (blue); Oriental topaz (yellow); Oriental amethyst (lavender); O
  5 KB (605 words) - 12:57, 23 December 2022
• Flux
  A substance that assists in the fusing of [[mineral|minerals]], [[metal|metals]], ceramic [[glaze|glazes]], or [[glass]]. A fl ...m carbonate]] (soda), [[lead sulfate, basic|white lead]], [[lead tetroxide|red lead]], [[potassium carbonate]] (potash), [[borax]], [[sodium oxide]], and
  2 KB (219 words) - 12:22, 7 August 2020
• Realgar
  ...s a pigment because of its bright rich color, but perhaps less so than its mineral congener, orpiment. Early occurrences are known for works of art from Chin ...Sandarack (Deut.); Rauschrot (Deut.); red arsenic sulfide; arsenic orange; red orpiment; burnt orpiment; ruby sulfur; risalgallo; oropimente quemado; jald
  5 KB (683 words) - 12:58, 29 February 2024

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