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Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, [1] [2] is an opaque, [3] impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to iron(III) inclusions. Jasper breaks with a smooth surface and is used for ornamentation or as ...
Biggs jasper is a variety of the mineral jasper. It is a "picture jasper" – a jasper that exhibits particular patterns and colors – and is used as an opaque gemstone . [ 1 ] It exhibits intricate, shell- or layer-like patterns in shades of brown ranging from beige to dark brown.
"Feature: Legendary sapphire for sale". United Press International; Sivaramakrishnan, P (January 4, 2016). "World's largest blue star sapphire 'found in Sri Lanka' ". BBC News; Smithsonian Institution (2019). "Bismarck Sapphire Necklace". Smithsonian Institution
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Orbicular jasper from Madagascar. Orbicular jasper is a variety of jasper which contains variably-colored orbs or spherical inclusions or zones. In highly silicified rhyolite or tuff, quartz and feldspar crystallize in radial aggregates of needle-like crystals which provide the basis or seed for the orbicular structure seen in this kind of jasper. [1]
Americans have abandoned 29.2 million 401(k) accounts holding trillions in assets. You can find them using a new government database or calling past employers.
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