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The group consists mostly of fused and slumped broad plates and shallow dishes with upright or out-splayed rims or hemispherical bowls. Sub-groups of mosaic glass production are 'network' or 'lacework' hemispherical bowls and vessels with meandering or spiral decorative patterns that imitate onyx.
Sofiero cut crystal glass bowl designed by Gunnar Cyrén 1960. Orrefors Glassworks (also known as just Orrefors) is a glassworks in the Swedish village Orrefors in Småland. Orrefors manufactured crystal glassware and art glass. The range consisted of crystal stemware, barware, vases, and sculptures and lighting products in crystal. The ...
Chrysoprase (also spelled chrysophrase) is a green variety of chalcedony, which has been colored by nickel oxide. (The darker varieties of chrysoprase are also referred to as prase. However, the term prase is also used to describe green quartz and to a certain extent is a color-descriptor, rather than a rigorously defined mineral variety.)
This sets it apart from rock crystal, amethyst, citrine, and the other varieties of crystalline quartz. Other members of the cryptocrystalline silica family include agate, carnelian, and onyx. Unlike many non-transparent silica minerals, it is the color of chrysoprase, rather than any pattern of markings, that makes it desirable.
Hardstone carving, in art history and archaeology, is the artistic carving of semi-precious stones (and sometimes gemstones), such as jade, rock crystal (clear quartz), agate, onyx, jasper, serpentinite, or carnelian, and for objects made in this way. [1] [2] Normally the objects are small, and the category overlaps with both jewellery and ...
Sulfur is likely to have entered the glass as a contaminant of natron, producing a green tinge. Formation of iron-sulfur compounds produces an amber colour. Reducing Purple Manganese (such as pyrolusite) Around 3% [1] Oxidising [1] Blue and green Copper: 2%–13% [1] The natural 'aqua' shade can be intensified with the addition of copper.