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2. Interference colour chart - Wikipedia

   en.wikipedia.org/wiki/Interference_colour_chart

   Interference colour chart. In optical mineralogy, an interference colour chart, also known as the Michel-Levy chart, is a tool first developed by Auguste Michel-Lévy to identify minerals in thin section using a petrographic microscope. With a known thickness of the thin section, minerals have specific and predictable colours in cross ...

3. Aquamarine (gem) - Wikipedia

   en.wikipedia.org/wiki/Aquamarine_(gem)

   Aquamarine (gem) 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] It is the birth stone of March.

4. Aquamarine (color) - Wikipedia

   en.wikipedia.org/wiki/Aquamarine_(color)

   ISCC–NBS descriptor. Brilliant green. B: Normalized to [0–255] (byte) Aquamarine is a color that is a light tint of teal, in between cyan and green on the color wheel. It is named after the mineral aquamarine, a gemstone mainly found in granite rocks. The first recorded use of aquamarine as a color name in English was in 1598.

5. Smoky quartz - Wikipedia

   en.wikipedia.org/wiki/Smoky_quartz

   Smoky quartz. Smoky quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystals. [6] The color of smoky quartz is produced when natural radiation, emitted from the surrounding rock, activates color centers around aluminum impurities within ...

6. ISCC–NBS system - Wikipedia

   en.wikipedia.org/wiki/ISCC–NBS_system

   The ISCC–NBS System of Color Designation is a system for naming colors based on a set of 13 basic color terms and a small set of adjective modifiers. It was first established in the 1930s by a joint effort of the Inter-Society Color Council (ISCC), made up of delegates from various American trade organizations, and the National Bureau of ...

7. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz is, therefore, classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. [10] Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation ...

8. List of colors (alphabetical) - Wikipedia

   en.wikipedia.org/wiki/List_of_colors_(alphabetical)

   This is an accepted version of this page This is the latest accepted revision, reviewed on 30 June 2024. For other color lists, see Lists of colors. This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "List of colors" alphabetical – news ...

9. HuffPost Data

   data.huffingtonpost.com

   Visualization, analysis, interactive maps and real-time graphics. Browse, copy and fork our open-source software. Remix thousands of aggregated polling results. Keep up with our latest on Twitter and Tumblr.