Gold and Silver were some of the early "precious metals" to be isolated. They are relatively rare. Gold is relatively nonreactive and thus maintains a wonderful luster. It also has tremendous workability. Silver is somewhat similar, not as rare as gold, but has a nice luster, and good workability.
Other metals such as Platinum and Palladium also are relative rare and non reactive.
This would compare to copper which was probably initially isolated in the form of bronze, but later purified. Somewhat more common than the precious metals, and corrodes quickly. Iron and other metals were refined later in our history. It has great strength, but oxidizes quickly.
The "Ancients" discovered the beauty and workability of gold and silver, and started using them for currency and jewelery.
In recent times, gold and silver have been used in electronics due to their high workability and low resistance, and resistance to corrosion. Yet much of the value still is attributed to the value given by the ancients as "precious".
An alloy is a mixture of two metals
One is hard one is soft
Generally precious metals as Au, Ag, Pt, Pd, Ir.
The hardness.
calcium is an alkaline earth metal thus has different characteristics to the alkali metals.
PRECIOUS GEMS ARE HARDER TO FIND, while metals are differenterer
Noble metals and precious metals can be the same thing. Noble metals are known for their usefulness in the industrial fields. They resist corrosion and oxidation. Precious metals fit this description, but are also aesthetically appealing and desirable, giving them value outside the manufacturing realm.
Just as the name implies- precious metals are metals- things that conduct electricity, have luster, ductility and malleability- and are rare. Examples include gold, silver, platinum, palladium, etc. Precious minerals- just that- minerals- defined as naturally occurring, homogeneous inorganic solid substances having a definite chemical composition and characteristic crystalline structure, color, and hardness. To be precious, they also would be rare and sought after. Examples may include diamonds, rubies, emeralds, etc.
Jewelers work with precious metals and stones.
A jeweler works with precious metals and stones.
Monex Precious Metals was created in 1967.
Precious metals
precious gems are rare and valuable and the semiprecious are not as rare
is brass a precious metal
An alloy is a mixture of two metals
'Precious stones' refers to diamonds, rubies, emeralds and sapphires. Everything else is semi-precious.
The Luhya translation of the English words 'precious metals' is "efichuma fie ebeyi."