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Hematine ring. Hematine (also magnetic hematite, hemalyke or hemalike) is an artificial magnetic material. [1] Hematine is widely used in jewelry. [citation needed]Although it is claimed by many that it is made from ground hematite or iron oxide mixed with a resin, analysis (of one object) has demonstrated it to be an entirely artificial compound, a barium-strontium ferrite.
Hematite (/ ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə-/), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils. [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2 O 3. It has the same crystal structure as corundum ...
This exchange value of 97.5 piastres to the pound sterling continued until the early 1960s when Egypt devalued slightly and switched to a peg to the United States dollar, at a rate of E£1 = US$2.3. The Egyptian pound continued with its exchange rate of £E = £1 0s 6d sterling until the beginning of the 1960s.
Ion-exchange resin beads. An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion exchange, that is also known as an ionex. [1] It is an insoluble matrix (or support structure) normally in the form of small (0.25–1.43 mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.
Shell money is a medium of exchange similar to coin money and other forms of commodity money, and was once commonly used in many parts of the world. [1] Shell money usually consisted of whole or partial sea shells, often worked into beads or otherwise shaped.
Because of the debased values of the piastres in the Middle East, these piastres became subsidiary units for the Turkish, Lebanese, Cypriot, and Egyptian pounds. [1] Meanwhile, in Indochina, the piastre continued into the 1950s and was subsequently renamed the riel , the kip , and the dong in Cambodia , Laos and Vietnam respectively.
At 10 months old, Esther Jo Bethard died after swallowing a stray water bead — a tiny, absorbent sphere that can grow inside the body and cause life-threatening injuries.
A Carved Gold Dust Faturan Prayer Bead Strand made from North African Tribal Beads. In the bead trade, "Faturan" is thought to be a mixture of natural amber shavings with other materials, and is described as having been invented in the Middle East in the 18th or 19th century, however, there is some dispute over this within the trade.