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Amethyst is a violet variety of quartz.The name comes from the Koine Greek αμέθυστος amethystos from α-a-, "not" and μεθύσκω (Ancient Greek) methysko / μεθώ metho (Modern Greek), "intoxicate", a reference to the belief that the stone protected its owner from drunkenness. [1]
The famous shoulder-clasps from Sutton Hoo, one of the finest examples of gold and garnet cloisonné inlay work (not enamel) Main articles: Fibula (brooch) and Celtic brooch Barbarian jewelry of the Migration Period is one of the most common forms of surviving art from their cultures, and the personal adornment of the elite was clearly ...
Hair jewellery became an established fashion during the mid eighteenth century. Hair jewellery became increasingly prominent in the 1850s with this trend lasting until the 1880s. [ 6 ] Although hair jewellery existed before 1861, its use by Queen Victoria after the death of her husband, Prince Albert , reignited and heightened the popularity of ...
Conversely, the jewellery industry in the early 20th century launched a campaign to popularise wedding rings for men, which caught on, as well as engagement rings for men, which did not, go so far as to create a false history and claim that the practice had medieval roots. By the mid-1940s, 85% of weddings in the U.S. featured a double-ring ...
In the late classical era body jewelry became more and more popular as the fashions tended towards a progressive state of undress. The body jewelry was the adornment of the body and was paired with other artifacts such as shoes, holding mirrors, etc.
Hipparchus (/ h ɪ ˈ p ɑːr k ə s /; Greek: Ἵππαρχος, Hípparkhos; c. 190 – c. 120 BC) was a Greek astronomer, geographer, and mathematician.He is considered the founder of trigonometry, [1] but is most famous for his incidental discovery of the precession of the equinoxes. [2]
Some fluorite, particularly the variety chlorophane (aka pyroemerald and cobra stone), may become very faintly luminescent simply from the heat of one's hand. Chlorophane is unusual for combining the properties of thermoluminescence, triboluminescence, phosphorescence, and fluorescence; it will emit visible spectrum light when rubbed, or ...
Natural citrines are rare; most commercial citrines are heat-treated amethysts or smoky quartzes. However, a heat-treated amethyst will have small lines in the crystal, as opposed to a natural citrine's cloudy or smoky appearance. It is nearly impossible to differentiate between cut citrine and yellow topaz visually, but they differ in hardness.