enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   The fineness of a precious metal object (coin, bar, jewelry, etc.) represents the weight of fine metal therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hardness and durability of coins and jewelry, alter colors, decrease the cost per weight, or avoid the cost ...

3. Platinum (color) - Wikipedia

   en.wikipedia.org/wiki/Platinum_(color)

   The 70th anniversary of any important event can be referred to as a platinum jubilee, although this term is seldom used. Music. a platinum album is an album whose sales figures have reached a certain amount. This threshold differs from market to market—in the United States, a platinum album is one that has sold at least 1,000,000 copies.

4. Acid test - Wikipedia

   en.wikipedia.org/wiki/Acid_test

   Acid test. An acid test is a qualitative chemical or metallurgical assay utilizing acid. Historically, it often involved the use of a robust acid to distinguish gold from base metals. Figuratively, the term represents any definitive test for attributes, such as gauging a person's character or evaluating a product's performance.

5. Gemological Institute of America - Wikipedia

   en.wikipedia.org/wiki/Gemological_Institute_of...

   www.gia.edu. The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [ 1 ] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate ...

6. Platinum - Wikipedia

   en.wikipedia.org/wiki/Platinum

   Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "little silver". [7] [8] Platinum is a member of the platinum group of elements and group 10 of the periodic ...

7. Interference colour chart - Wikipedia

   en.wikipedia.org/wiki/Interference_colour_chart

   Interference colour chart. In optical mineralogy, an interference colour chart, also known as the Michel-Levy chart, is a tool first developed by Auguste Michel-Lévy to identify minerals in thin section using a petrographic microscope. With a known thickness of the thin section, minerals have specific and predictable colours in cross ...

8. Diamond (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Diamond_(gemstone)

   Diamond[a] is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and ...

9. This Is Why Your Skin Turns Green After Wearing Certain Jewelry

   www.aol.com/why-skin-turns-green-wearing...

   The good news: there are still ways to wear your favorite pieces of jewelry. The post This Is Why Your Skin Turns Green After Wearing Certain Jewelry appeared first on Reader's Digest.