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Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6 (PO 4) 4 8 ·4H 2 O.It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue.
Example of bead set diamonds Example of pavé set diamonds "Bead setting" is a generic term for setting a stone directly into metal using gravers, also called burins, which are essentially tiny chisels. A hole is drilled directly into the surface of the metal, before a ball burr is used to make a concave depression the size of the stone.
Turquoise is found in only a few places on Earth, and the world's largest turquoise-producing region is the southwest United States. Turquoise is prized for its attractive colour, most often an intense medium blue or a greenish blue, and its ancient heritage. Turquoise is used in a great variety of jewellery styles.
Rendering of a jewellery design before going to the jeweller's bench. Jewellery design is the art or profession of designing and creating jewellery.It is one of civilization's earliest forms of decoration, dating back at least 7,000 years to the oldest-known human societies in Indus Valley Civilization, Mesopotamia, and Egypt.
Ammolite is usually fashioned into freeform cabochons and mounted in gold, with diamonds as accents. Due to its delicacy, ammolite is best reserved for use in pendants, earrings, and brooches; if used as a ring stone, ammolite should be given a hard protective cap, namely one of synthetic spinel as used in triplets. Whole polished ammonites of ...
Twenty Navajo chiefs asked for peace. In 1804 and 1805, the Navajo and Spaniards mounted major expeditions against each others' settlements. In May 1805, another peace was established. Similar patterns of peace-making, raiding, and trading among the Navajo, Spaniards, Apache, Comanche, and Hopi continued until the arrival of Americans in 1846. [15]
Cutting and polishing diamonds in the Netherlands, 1946. The art of cutting a gem is an exacting procedure performed on a faceting machine.The ideal product of facet cutting is a gemstone that displays a pleasing balance of internal reflections of light known as brilliance, strong and colorful dispersion which is commonly referred to as "fire", and brightly colored flashes of reflected light ...
The Elizabeth Taylor Diamond, formerly known as the Krupp Diamond, is a 33.19-carat (6.638 g) diamond that was bought by Richard Burton for his wife, Elizabeth Taylor in 1968. The diamond was one of a number of significant pieces of jewellery owned by Taylor, her collection also included the 68 carat Taylor–Burton Diamond , which was bought ...
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