Heat-resistant synthetic jewelry material
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United States of America Patent
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Oct 31, 2017
Grant Date -
Apr 28, 2016
app pub date -
Jun 25, 2013
filing date -
May 13, 2013
priority date (Note) -
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Abstract
A heat-resistant synthetic jewelry material having a transparent, semitransparent or nontransparent composite nanocrystalline material on the basis of nanosized oxide and silicate crystalline phases. The material includes at least one of the following crystalline phases: spinel, quartz-like phases, sapphirine, enstatite, petalite-like phase, cordierite, willemite, zirconium, rutile, zirconium titanate, zirconium dioxide with a content of ions of transition elements, rare-earth elements and precious metals of from 0.001 to 4 mol %. One of the crystalline phases is additionally quartz-like solid solutions of lithium magnesium zinc aluminosilicates with a virgilite or keatite structure. The composition is selected from the following components,s SiO2, Al2O3, MgO, ZnO, Li2O, PbO, ZrO2, TiO2, NiO, CoO, CuO, Cr2O3, Bi2O3, Fe2O3, MnO2, CeO2, Nd2O3, Er2O3, Pr2O3 and Au.
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