[Answer] Some metals are considered precious metals because of their ________.

Answer: concentration in the Earth’s crust
Some metals are considered precious metals because of their ________.
Precious metals are rare naturally occurring metallic chemical elements of high economic value. Chemically the precious metals tend to be less reactive than most elements. They are usually ductile and have a high lustre. Historically precious metals were important as currency but are now regarded mainly as investment and industrial commodities. Gold silver platinum and palladium each have an ISO 4217 currency code. The best known precious metals …
Fine silver for example 99.9% pure silver is relatively soft so silver is usually alloyed with copper to increase its hardness and strength.Sterling silver is prone to tarnishing and elements other than copper can be used in alloys to reduce tarnishing as well as casting porosity and firescale.Such elements include germanium zinc platinum silicon and boron.
Precious metal – Wikipedia
Precious metal – Wikipedia
Precious metal – Wikipedia
Precious metal – Wikipedia
A gemstone (also called a gem fine gem jewel precious stone or semi- precious stone) is a piece of mineral crystal which in cut and polished form is used to make jewelry or other adornments. However certain rocks (such as lapis lazuli and opal) and occasionally organic materials that are not minerals (such as amber jet and pearl) are also used for jewelry and are therefore often …
Tue Jul 19 2005 14:30:00 GMT-0400 (Eastern Daylight Time) · However provisions for vessels made from non- precious metals are made as well provided they are “made from other solid materials which in the common estimation in each region are considered precious or noble.” Some call the communion-plate a “paten” but the English translation of the General Instruction of the Roman Missal approved by the …
The boron group are the chemical elements in group 13…

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