Opal is not a mineral, but a silica gel.
a diamond is a mineral (also is a gem)
gem
Granite is a rock, not a mineral, gem, or ore. It is a type of igneous rock formed from the cooling and solidification of magma beneath the Earth's surface.
what is the name of the state stone in delaware
Ruby is classified as both a gem and a mineral. It is a variety of the mineral corundum, which is composed of aluminum oxide. Additionally, rubies can be found in ore deposits, but they are primarily valued and recognized for their gemstone quality.
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
No, nickel is a mineral.
Yes.
The web address of the Houston Gem And Mineral Society is: http://www.hgms.org
The web address of the Fallbrook Gem And Mineral Museum is: http://www.fgms.org
a gem
Opal and amber are not minerals.
gem