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ColorBrewer is an online tool for selecting map color schemes based on palettes created by Cynthia Brewer. [1] It was launched in 2002 by Brewer, Mark Harrower, and The Pennsylvania State University. Suggested color schemes are based on data type (sequential, diverging, or qualitative).
Michel-Lévy interference colour chart issued by Zeiss Microscopy. 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.
Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al 2 Si O 4 (F, OH) 2.It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden brown to yellow-orange. [7]
This is a list of software palettes used by computers. Systems that use a 4-bit or 8-bit pixel depth can display up to 16 or 256 colors simultaneously. Many personal computers in the early 1990s displayed at most 256 different colors, freely selected by software (either by the user or by a program) from their wider hardware's RGB color palette.
For each unique palette, an image color test chart and sample image (truecolor original follows) rendered with that palette (without dithering) are given. The test chart shows the full 256 levels of the red, green, and blue (RGB) primary colors and cyan, magenta, and yellow complementary colors, along with a full 256-level grayscale.
Fixed 16-color palette (1 bit each of red, green, blue, and brightness, with bright white replaced by orange), with 2 colors per block on an 8×1 pixel attribute grid. Commodore Plus/4 (1984) Multicolor and High resolution 16-color graphic modes, from 121-color master palette (black and 15 hues by 8 luminosity levels). Amstrad CPC (1984)
The DeLong Star Ruby - a 100-carat stone discovered in Burma in the 1930s. The Patricia Emerald - a 12-sided 632-carat emerald found in Colombia in 1920, unique because it was never cut into a gem shape. [2] The Brazilian Princess Topaz - a light blue gemstone weighing 9.5 pounds, considered to be the largest cut gemstone in the world. [15]
This is a list of gemstones, organized by species and types. Minerals ... Topaz; Tourmaline subgroup: Achroite (var.) Chrome ... Color (beta) Automatic. Light.