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Examples of jewelry worn by the higher social classes include solid gold necklaces, earrings, bracelets, rings, and bulla with many variations within these classes of jewelry. Some bracelets were used without clasps (solid gold snake bracelets), while others used gold pins or small gold screws to fasten the bracelet to the wrist. [5] [6]
Other hoop designs do not complete the circle, but penetrate through the ear in a post, using the same attachment techniques that apply to stud earrings. A variation is the continuous hoop earring . In this design, the earring is constructed of a continuous piece of solid metal, which penetrates through the ear and can be rotated almost 360°.
By 1500 BC, the peoples of the Indus Valley were creating gold earrings and necklaces, bead necklaces, and metallic bangles. [citation needed] Before 2100 BC, prior to the period when metals were widely used, the largest jewellery trade in the Indus Valley region was the bead trade. Beads in the Indus Valley were made using simple techniques.
Examples include the Musical Stones of Skiddaw in the English Lake District; the stones in Ringing Rocks Park, in Upper Black Eddy, Bucks County, Pennsylvania; the Ringing Rocks of Kiandra, New South Wales; and the Bell Rock Range of Western Australia. Ringing rocks are used in idiophonic musical instruments called lithophones.
When jewelry containing sapphires or rubies is heated, those stones should not be coated with boric acid (which can etch the surface) or any other substance. They do not have to be protected from burning, like a diamond (although the stones do need to be protected from heat stress fracture by immersing the part of the jewelry with stones in the ...
A theory on the movement of megalithic stones for monuments has been put forward as a result of an observed correlation between standing stone circles and a concentration of carved stone balls. The suggestion is that the stone balls might have been used like ball bearings for transporting big stones. [11]
Jewel bearings were invented in 1704 for use in watches by Nicolas Fatio de Duillier, Peter Debaufre, and Jacob Debaufre, who received an English patent for the idea.. Originally natural jewels were used, such as diamond, sapphire, ruby, and g
A gallstone is a stone formed within the gallbladder from precipitated bile components. [2] The term cholelithiasis may refer to the presence of gallstones or to any disease caused by gallstones, [5] and choledocholithiasis refers to the presence of migrated gallstones within bile ducts.
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