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In August 2020, the U.S. Food and Drug Administration (FDA) became aware of nitrosamine impurities in certain samples of rifampin. [61] The FDA and manufacturers are investigating the origin of these impurities in rifampin, and the agency is developing testing methods for regulators and industry to detect the 1-methyl-4-nitrosopiperazine (MNP ...
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 polished, is used to make jewelry or other adornments.
The source of the idea of lapidary medicine stems from information found in lapidaries, books giving "information about the properties and virtues of precious and semi-precious stones." [1] These lapidaries not only provide understanding of the sale and production of items of lapidary medicine, but also provide information about common cultural ...
Calcite. Manganoan calcite (var.); Caledonite; Canasite; Cancrinite. Vishnevite; Carletonite; Carnallite; Cassiterite; Catapleiite; Cavansite; Celestite; Ceruleite ...
Hoang Ha bronze drum of Đông Sơn Culture (national treasure no. 2 – set 1). A National Treasure (Vietnamese: Bảo vật quốc gia) or a national precious object [1] is a tangible cultural heritage or object handed down from the past with historical, cultural or scientific value of exceptional significance to the country of Vietnam. [2]
"Vaiḍūrya" is a precious stone which most translators have rendered as lapis lazuli. Librarian Marianne Winder has proposed that "vaiḍūrya" originally meant beryl ; [ 4 ] however, pure beryl is colorless, while its blue variant, aquamarine , is described as a 'precious blue-green color-of-sea-water stone' [ 5 ] rather than the usual dark ...
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Emerald of Saint Louis, [5] 51.60 carats cut; discovered in Austria, probably Habachtal, resides in the National Museum of Natural History, Paris; Gachalá Emerald [6] Mogul Mughal Emerald, 217.80 carats cut; mined in Colombia and cut in the Mughal empire in Hijri year 1107 (1695–1696), resides in the Museum of Islamic Art, Doha, Qatar [7] [8]