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Its most important practical property is optical absorption, like in the color centers, which gives diamond green, or sometimes even green–blue color (in pure diamond). The characteristic feature of this absorption is a series of sharp lines called GR1-8, where GR1 line at 741 nm is the most prominent and important.
Color chips or color samples from a plastic pellet manufacturer that enables customers to evaluate the color range as molded objects to see final effects. A color chart or color reference card is a flat, physical object that has many different color samples present. They can be available as a single-page chart, or in the form of swatchbooks or ...
Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London Diamond Syndicate. As the diamond trade developed, early diamond grades were introduced. Without any co-operative development, these early grading systems lacked standard nomenclature and consistency. Some early grading scales were; I, II, III; A, AA, AAA; A, B, C. Numerous terms
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The ice appears black in color. [ 126 ] [ 127 ] It is distinct from ionic water , which is a hypothetical liquid state characterized by a disordered soup of hydrogen and oxygen ions. The initial evidence came from optical measurements of laser-heated water in a diamond anvil cell , [ 128 ] and from optical measurements of water shocked by ...
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English: This upload is a re-worked version of the existing chart on the Xterm page, the existing chart has been placed in the public domain by its author, bmdavll. I am also placing my SVG version in the public domain.
Diamond's RI is responsible for its brilliance—the amount of incident light reflected back to the viewer. Also important is a diamond's dispersive power—the ability of the material to split white light into its component spectral colors—which is also relatively high, at 0.044 (as measured from the B-G interval). The flashes of spectral ...
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