Some minerals have a crystal structure that is hard enough to be durable when worn on a daily basis. If this crystal structure is rare and possesses clarity it becomes valuable, and can be called a gem crystal.
The difference between gemstones and the rest of the minerals is that gemstones are crystalline forms of minerals.
If you look at the microscopic view of a gemstone's or any crystal's structure, you will see that it is a unique, organized structure. Not all minerals have this structure.
A mineral specimen becomes a gem when the specimen is polished or cut (shaped) in such a way as to improve its appearance. Normally, only a transparent or translucent specimen is usually cut into a gem.
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:
and 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.
To be considered a gemstone, a mineral should have a crystalline structure, should refract light, and should have a hardness of 6 or above. An opal does not have a crystalline structure. It has a hardness of 6. All other gemstones have a hardness of 7 or higher and have a crystalline structure.
This is from my sense of it: a gemstone needs to be a mineral of some kind that can be found naturally occurring (so a synthetic ruby would still fit the category because rubies or corundum can be found as a natural mineral) and has intrinsic value (usually can be set into jewelry). Glass or plastic would not be considered a gemstone. Gemstones are also divided into precious and semi-precious. The precious gemstones being the ones that are most rare, expensive, durable, and attractive (historically-speaking); these are rubies, sapphires, emeralds, diamonds, and opals (notice that all of these gems except opal are very hard and durable). The semiprecious stones are generally less rare (although this depend on quality as well) and less durable; there's a bunch: porous gemstones like pearls, precious coral, jet, and amber and non-porous gemstones like amethyst, citrine, jasper, rose quartz, agate, onyx, sardonyx, aquamarine, turquoise, garnets, tourmaline, tanzanite (can be considered to be precious sometimes), topaz, apatite, smithsonite (rare).
In general, for a mineral to be a gem it should be hard, durable, and colorful.
Because these certain elements are less common than other elements like gold, platinum, and silver.
It's a mineral or stone that is cut and placed in jewelry.
beauty and rarity
It is necessary for a hypothesis to have two things, the words IF and THEN. Another word can be added, BECAUSE. A successful hypothesis has to have all three.
None. A mineral is a naturally occurring, inorganic, homogeneous solid with a definite (but not fixed) chemical composition and an ordered atomic arrangement. As wood is completely organic, there are no minerals in wood.
Order fulfillment is the process of providing the good or services to a party that has purchased.
The scientific attitude which a person must possess in order to seek answers, is the willingness to accept the validity of his or her observations, whether they confirm or disprove existing ideas about whatever it is that is under investigation. In other words, he or she must seek answers without bias.
Some measure of examining the information.
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.
Skill, and grammar.
Rock
A hypothesis must possess capable of being proven false and testable in order to be considered to be scientific.
I forget.
There are many important leadership qualities that are important for a president to possess in order to be successful. A president has to be fair, stable, reasonable, responsible, and brave.
cause its cool cant help you with your research paper big F
Being a professional educator means being able to possess the necessary qualities to be an effective teacher or educator. You must be able to possess the different professional and personal qualities in order to be the best educator. You must also be able to adhere to the standards set for your profession.
Water is not considered a mineral because it does not meet the requirement of having a solid crystalline structure. Ice does meet this criterion and therefore, it is considered a mineral.
i have all the abilities which your company wants like i have a very good reasoning and analytical ability ,good communication skills and the qualities which a professional should possess in order to move in any industry like integrity, honesty, sympathy self-esteem and determination i do possess all these qualities and while working in your company i will improve all these qualities in a much better way.
Bravery and chivalry were important qualities to King Arthur. His knights had to demonstrate that they had those two qualities in order to be considered ideal.
Because in order for it to be a mineral, it must be a solid. And obviously oxygen is not a solid.