yes there are eg graphite natural gas iron
Yes. Minerals are everywhere. Without minerals, there would be nothing.
The web address of the Houston Gem And Mineral Society is: http://www.hgms.org
Opal and amber are not minerals.
No State mineral, there is a State Gem that may fall into that category though, fossilized wood, weirdly enough.
Gemmmmmmm just one m HAHAHAHA!!!!!!!
Diamond is a gem, but not the only gemstone. Rubies, emeralds, sapphires and other stones can also be considered gemstones. The word gem can also be used to describe other nouns, such as a person: "She's a gem."
Yes, like the mineral Quartz is also a gem.
A gem is considered any attractive mineral or rock which when cut and polished, may be used for ornamentation. A gem can be either a mineral or a rock, but most gems are minerals. A rock is an aggregate of many minerals, with no specific structure, while a mineral has a much more ordered atomic structure, with specific physical and chemical properties. A gem is not necessarily a crystal; lapis lazuli is not a mineral or a crystal, yet can still be considered a gem due to its desirable color and traits when polished.
Diamond is a mineral and a gem. The main ore of diamond is called kimberlite.
mining it
No. Gems are a mineral (rock) and do not occur in living things.
its an mineral
Ruby and sapphire are both gem varieties of the mineral corundum, an aluminum oxide.
a diamond is a mineral (also is a gem)
A sapphire gem is mainly composed of the mineral corundum and other trace mineral impurities that give it its color.
Gem
Yes.
No, nickel is a mineral.