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Peridot is one of the few gemstones that occur in only one color: an olive-green. The intensity and tint of the green, however, depends on the percentage of iron in the crystal structure, so the color of individual peridot gems can vary from yellow, to olive, to brownish-green. In rare cases, peridot may have a medium-dark toned, pure green ...
The Great Globe at Swanage is one of the largest stone spheres in the world and stands at Durlston Castle within Durlston Country Park, a 113-hectare (280-acre) country park and nature reserve. [1] It is constructed of Portland stone, weighs about 40 tonnes and is 3 metres (10 ft) in diameter. [2] The Great Globe with Durlston Castle in the rear
Ammolite (organic; also a gemstone) Amosite (asbestiform grunerite) Antozonite (variety of fluorite) Anyolite (metamorphic rock - zoisite, ruby, and hornblende) Aquamarine (light blue variety of beryl) Argentite (high temperature form of acanthite) Asbestos (fibrous serpentine- or amphibole minerals) Auerlite (variety of thorite)
This is a list of gemstones, organized by species and types. Minerals. There are over 300 types of minerals that have been used as gemstones. Such as: A–B
Chrysoberyl is the third-hardest frequently encountered natural gemstone and lies at 8.5 on the Mohs scale of mineral hardness, between corundum (9) and topaz (8). [ 7 ] An interesting feature of its crystals are the cyclic twins called trillings .
One significant item is a gemstone globe, collected and looted by the Iranian monarchy. For many centuries the Iranian Crown Jewels were kept in the vaults of the Imperial Treasury. However, in the early 20th century, the first Pahlavi Shah transferred ownership of the crown jewels to the state as part of a massive restructuring of the country ...
The tips of the compass here extend to the edge of the sculpture. The Stone of Tizoc is currently located in the National Anthropology Museum in the same gallery as the Aztec Sun Stone. The Stone of Motecuhzoma I is a massive object approximately 12 feet in diameter and 3 feet high with the 8 pointed compass iconography.
A 17th century English lapidary text. The etymological root of the word lapidary is the Latin word lapis, meaning "stone". [6] In the 14th century, the term evolved from lapidarius, meaning 'stonecutter' or 'working with stone', into the Old French word lapidaire, meaning 'one skilled in working with precious stones'.
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