because they are hard and expensive
Yes, silver and gold are good semi conductor.
turquoise, silver, gold
The jewelry that have gold tone or silver tone means that these jewelry have been plated a thin layer of gold or silver so that these jewelry have the color of silver or gold.
Silver
Silver and Gold are very unreactive, meaning that they won't tarnish easily, or change colour. Gold is perfect because it never reacts at all where as silver does tarnish, so it isn't as highly prized. Also, Gold and silver don't burn. Burning magnesium is bright enough to blind you
925 is the mark for sterling silver, which is 92.5% silver. The BX is probably the manufacturer's mark. The gold jewelry is gold-plated sterling silver.
If the item is a silver color and says "925" on it, that means it is sterling silver. (If it were yellow and stamped "925" it would be vermeil - gold plated silver.) Visit the link below to learn more about gold and silver markings. is this a good piece of jewelry, maybe worth $25
330 on jewelry- ring what does it means
Probably that part of it is 18k gold, and part is sterling silver.
That type of jewelry is called vermeil. It is made of sterling silver and plated with 14 karat gold, not solid gold.
Well, silver and gold aren't magnetic. It's a start, but this isn't a definitive test for metal content.
they work in the mining industry and the silver and Gold gets turned into Jewelry