the purity of a coin, medal, or precious metal item. Uses a scale of 0 to 1.000. Examples: A silver coin with fineness of .999 would be as pure as a coin can be. A silver coin with fineness of .500 would be made of 50% silver. Most 1964 and earlier US silver coins were .900 fine, or 90% pure silver.
The purity of precious metal measured in parts per thousand. A "Good Delivery" bar contains a least 995 part pure gold and no more that 5 parts other metals or impurities. A bar that is 999.9 fine is 99.99% pure gold and referred to as "four nines" gold.
Degree or grade of purity of precious metal, either in monetary or bullion form. Most forms of precious metal require an additional metal to provide a durable alloy. Often stated in terms of purity per 1,000 parts: i.e. .925 fine silver coin has 92.5% silver and 7.5 % other metal
A measure of the proportion of precious metal in alloys. Sometimes expressed as a percentage, sometimes millesimally, it is otherwise understood to be a proportion of a unit. For example .999 means 0.999 out of 1, which is the same as 99.9% or 999 parts per thousand.
the purity of a precious metal measured in 1,000 parts of an alloy: a gold bar of .995 fineness contains 995 parts gold and 5 parts of another metal. Example: the American Gold Eagle is .9167 fine, which means it is 91.67% gold. A Canadian Maple Leaf has a fineness of .999, meaning that it is 99.9% pure.
Gold purity, usually expressed in parts per thousand; thus 995 is 995/1000 or 99.5% pure. 995 was the highest purity to which gold could be manufactured when good delivery was determined, but for high-technology applications it is possible to produce metal of up to 99.9999% purity.
The fineness of a precious metal refers to the ratio of the primary metal to any additives or impurities. Most precious metal is used in the form of an alloy. Other metals are added to increase hardness, to make the metal more practical for use in such items as coins and jewelry, or to decrease the cost of the alloy.
the diameter of an individual fibre, often measured in microns with extremely precise laboratory instruments. Genetics, nutrition, health, stress and age may affect this measure and it can change dramatically from year to year.
1. A relative measure of fiber size expressed in denier or tex for manufactured fibers. For cotton fineness is expressed as the mean fiber weight in micrograms per inch. For wool fineness is the mean fiber width or mean fiber diameter expressed in microns (to the nearest 0.001 2 For yarn fineness see YARN NUMBER. 3. For fineness of knit fabrics see GAUGE.