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Blue gold is an alloy of gold and either gallium or indium. [15] Gold-indium contains 46% gold (about 11 karat) and 54% indium, [ 4 ] forming an intermetallic compound AuIn 2 . While several sources remark this intermetallic to have "a clear blue color", [ 3 ] in fact the effect is slight: AuIn 2 has CIE LAB color coordinates of 79, −3.7, − ...
Several articles, including the Journal of Gemmology state that gold sheen sapphire is high in iron and titanium oxide. [2] It has inclusions of ilmenite, hematite (gold color) [5] and magnetite (black). It exhibits asterism and hexagonal growth, [6] a lack of UV fluorescence, healed fractures and polysynthetic twinning (parallel lines). Golden ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 8 January 2025. Color "Gold tone" redirects here. For the type of photographic print, see Gold tone (print). For treatments that change the natural color of gold, see Colored gold. For the element, see Gold. This article needs additional citations for verification. Please help improve this article by ...
Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. [1] The colloid is coloured usually either wine red (for spherical particles less than 100 nm) or blue-purple (for larger spherical particles or nanorods). [2]
Consequently in art and in heraldry one would normally use a metallic paint that glitters like a real metal. Especially in sacral art in Christian churches, real gold (as gold leaf) was used for rendering gold in paintings, e.g. for the halo of saints. Gold can also be woven into sheets of silk to give an East Asian traditional look.
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 January 2025. Colors are an important part of visual arts, fashion, interior design, and many other fields and disciplines. The following is a list of colors. A number of the color swatches below are taken from domain-specific naming schemes such as X11 or HTML4. RGB values are given for each swatch ...
Metal-coated crystals are artificial products made by coating crystals, such as quartz, with metal to give them an iridescent metallic sheen. Crystals treated this way are used as gemstones and for other decorative purposes. Possible coatings include gold, indium, titanium, niobium and copper.
This paradigm shift in the research history of Egyptian blue provided natural scientific evidences for the production in the northern Phlegraean fields (agreement with trace minerals found in the beach sands at the Gulf of Gaeta), the use of a sulphidic copper ore (instead of often-mentioned metallic copper or bronze), and plant ash as flux in ...
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