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Jasper http://www.umanitoba.ca/ Colossal jasper vase crafted at the Kolyvan' Lapidary Works for the Russian Imperial Court. It is undoubtedly the largest objet d'art ever created from a single piece of gemstone. The vase is presently on display at the Hermitage (St. Petersburg, Russia). http://en.wikipedia.org/wiki/Jasper Jasper is an opaque, impure variety of quartz that is usually red, yellow or brown in color. This mineral breaks with a smooth surface, and is often used for ornamentation or as a gemstone. It can be highly polished and is used for vases, seals, and at one time for snuff boxes. When the colors are in stripes or bands, it is called striped or banded jasper. Jaspilite is a banded iron formation rock that often has distinctive bands of jasper. The Egyptian pebble is a brownish-yellow jasper. http://www.minerals.net/mineral/silicate/tecto/quartz/varietys/jasper.htm#Orbicular Basanite - Black, fine-grained variety of Jasper. Brecciated Jasper - Jasper in rounded fragments naturally cemented together in a gray material. Egyptian Jasper - Orbicular Jasper with white and gray circles on a red background. Found as rounded pebbles on the beaches of Washington and Egypt. Ferruginous Jasper - Jasper with iron impurities. Green Jasper - Jasper of a light to dark green color. Kinradite - Orbicular Jasper with rings of colorless or white Quartz. Leopard Jasper - Orbicular Jasper with a tan color, appearing as "leopard spots". Leopard Stone - Synonym of Leopard Jasper Morrisonite - Outstanding multicolored Jasper from the Owyhee River gorge (Malheur Co.), Oregon. Opal Jasper - Brecciated Jasper in which the cementing material is Opal. Orbicular Jasper - Jasper with rounded rings throughout the stone. Poppy Jasper - Yellow Orbicular Jasper with red rings. Poppy Stone - Synonym of Poppy Jasper Riband Jasper - Jasper used as a layer stone for engraving. Rogueite - Green Jasper from the Rogue River in Oregon Russian Jasper - Jasper from Russia, usually with reddish spots. Silex Jasper - Jasper with red and brown patches. |
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