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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 ...
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
Many precious and semiprecious stones are used for jewellery. Among them are: Amber Amber, an ancient organic gemstone, is composed of tree resin that has hardened over time. The stone must be at least one million years old to be classified as amber, and some amber can be up to 120 million years old. Amethyst
Roman jewelry. A pair of crotalia earrings from the Roman Empire. Ancient Roman jewelry was characterized by an interest in colored gemstones and glass, in contrast with their Greek predecessors who focused primarily on the production of high-quality metalwork by practiced artisans. [1] Extensive control of Mediterranean territories provided an ...
Logan Sapphire. Star of Bombay, given to Mary Pickford by Douglas Fairbanks, Sr. Star of India. Stuart Sapphire. Black Star of Queensland. Star of Adam, with a weight of 1,404.49 carats (280.898 g), it is the largest star sapphire in the world. Queen Marie of Romania Sapphire.
Medieval jewelry. The Dunstable Swan Jewel, a livery badge in gold and ronde bosse enamel, about 1400. The Middle Ages was a period that spanned approximately 1000 years and is normally restricted to Europe and the Byzantine Empire. The material remains we have from that time, including jewelry, can vary greatly depending on the place and time ...
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