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A lapidary is a text in verse or prose, often a whole book, that describes the physical properties and metaphysical virtues of precious and semi-precious stones, that is to say, a work on gemology. [1] It was frequently used as a medical textbook, since it also includes practical information about the supposed medical application of each stone ...
Nacre (/ ˈ n eɪ k ər / NAY-kər, also / ˈ n æ k r ə / NAK-rə), [1] also known as mother-of-pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer.
Pearl powder is widely believed to help improve the appearance of the skin, and is used as a cosmetic by royal families in Asia. [3] It is also used as a treatment for acne. Some studies have claimed that pearl powder can stimulate the skin's fibroblasts, help regenerate collagen, and accelerate healing of certain skin conditions, wounds, and ...
The correct definition of a South Sea pearl – as described by CIBJO and GIA – is a pearl produced by the Pinctada maxima [21] pearl oyster. South Sea pearls are the color of their host Pinctada maxima oyster – and can be white, silver, pink, gold, cream, and any combination of these basic colors, including overtones of the various colors ...
The pearl industry in Hyderabad flourished due to the patronage of the Qutub Shahi kings and the Asaf Jahis, who were said to have an affinity for sparkling jewels. [1] The pearls were not only part of the traditional regalia of this royal clientele but the pearls' crushed form are also believed to have healing and beautifying properties.
Akoya pearl cultivation, which began in the 1920s in Japan, provided numerous small, most often greyish pearls as a by-product. Traders from India, where natural pearls were harvested and processed during past centuries, needed no sales talk to be convinced that they could sell Japan Akoya keshi in their market and to visiting Arabs as natural ...
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[4] [5] Most gemstones are hard, but some softer minerals such as brazilianite may be used in jewelry [6] because of their color or luster or other physical properties that have aesthetic value. However, generally speaking, soft minerals are not typically used as gemstones by virtue of their brittleness and lack of durability.