How are jewels formed?

Question

like dimonds rubies emralds garnets and crystals

Answer 1

im fairly sure there will be type that can be formed in a lab, but...

most are formed by carbon in the earths crust being melted down, mixed and crushed with other rocks and chemicals, then cooling as they rise slowly back up to the surface.

Answer 2

depends on wheather you are talking about natural or lab gems.

Answer 3

they can be formed by meteor fireball

Answer 4

they are particles that have been compacted over millions of years, pressure, weather, heat and the particles that they are made of give the end result.

Answer 5

by a jeweler

Answer 6

a ruby is a variety of the mineral oxide of aluminium which is known as corundum. other varieties being sapphire and common emery. the ruby which is coloured red by a trace of ferric oxide and chromium,is one of the most valuable precious stones.

artificial rubies are made by fusing alumina in an electric arc and allowing it to crystallize.