The crystallization
Yes, like the mineral Quartz is also a gem.
its an mineral
A sapphire gem is mainly composed of the mineral corundum and other trace mineral impurities that give it its color.
a diamond is a mineral (also is a gem)
Gem
Yes.
No, nickel is a mineral.
The web address of the Fallbrook Gem And Mineral Museum is: http://www.fgms.org
The web address of the Houston Gem And Mineral Society is: http://www.hgms.org
All gems are minerals, but not all minerals are gems. In order for the mineral to be classified as a gem, the mineral must have very specific qualities. Minerals are judged on the following:beautydurabilityrarityportabilityand among other things..Submitted answer does not answer the question nor is it correct. All Gems are not minerals. A Gem is a piece of rock or mineral, which, in cut and polished form, is used to make jewelry or other adornments.
a gem
Opal and amber are not minerals.