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Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...
Morganite (gem) Morganite is an orange or pink variety of beryl and is also a gemstone. [2] Morganite is mined in Brazil, Afghanistan, Mozambique, Namibia, the United States, and Madagascar. [3] Morganite has grown in popularity since 2010. [2] Brides and CNN have listed it as a possible alternative to diamond for engagement rings. [4][5]
Quartz. Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral ...
Victorian jewellery originated in England; it was produced during the Victoria era, when Queen Victoria reigned from 1837 to 1901. Queen Victoria was an influential figure who established the different trends in Victorian jewellery. [1] The amount of jewellery acquired throughout the era established a person's identity and status.
Herkimer diamonds are double-terminated quartz crystals discovered within exposed outcrops of dolomite in and around Herkimer County, New York, and the Mohawk River Valley in the US. [1][2] They are not diamonds; the "diamond" in their name is due to both their clarity and well formed faces. Because the first discovery sites were in the village ...
Tiger's eye (also called tiger eye) is a chatoyant gemstone that is usually a metamorphic rock with a golden to red-brown colour and a silky lustre.As members of the quartz group, tiger's eye and the related blue-coloured mineral hawk's eye gain their silky, lustrous appearance from the parallel intergrowth of quartz crystals and altered amphibole fibres that have mostly turned into limonite.
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