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Siladium is a trademark for a stainless steel alloy used in jewelry, particularly in high school and college class rings. [1]The trademark was registered in 1973 to John Roberts, Inc., maker of the Artcarved brand of class rings.
Titanium rings are jewelry rings or bands which have been primarily constructed from titanium. The actual compositions of titanium can vary, such as "commercial pure" (99.2% titanium) or "aircraft grade" (primarily, 90% titanium, 6% aluminum, 4% vanadium), and titanium rings are often crafted in combination with other materials, such as gemstones and traditional jewelry metals.
The lower right section is an example of ring armour. Ring armour (ring mail) is an assumed type of personal armour constructed as series of metallic rings sewn to a fabric or leather foundation. No actual examples of this type of armour are known from collections or archaeological excavations in Europe. It is sometimes called ringmail or ring ...
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Gold-filled material is used to create a variety of products, including: Jewelry: Gold-filled is a popular choice for jewelry because it's durable, affordable, and hypoallergenic. Findings and components: Gold-filled is also used to make jewelry findings (e.g., clasps, jump rings) and other components.
Get-rich-quick schemes are extremely varied; these include fake franchises, real estate "sure things", get-rich-quick books, wealth-building seminars, self-help gurus, sure-fire inventions, useless products, chain letters, fortune tellers, quack doctors, miracle pharmaceuticals, foreign exchange fraud, Nigerian money scams, fraudulent treasure hunts, and charms and talismans.
If a material contains highly directional bonds, the shear modulus will increase and give a low Poisson ratio. A material is also considered hard if it resists plastic deformation. If a material has short covalent bonds, atomic dislocations that lead to plastic deformation are less likely to occur than in materials with longer, delocalized bonds.