Heat and pressure underground over centuries of time, just like all rocks.
Heat and pressure are used artificially by scientists who form the gemstones to perfection in a laboratory.
Asked in Industries and Professions
What are three properties for which gemstones are valued and two ways they are used in industry?
Gemstones are valued for their brilliance, colour and hardness. They are used in industry in drill bits, especially for things like drilling wells, and in abrasives. ...
Asked in Cruises and Ocean Liners
How do the prices of natural and created gemstones compare?
Manmade gemstones are generally cheaper than natural gemstones. They are cheaper because they are not as durable as natural gemstones. ...
How are natural gemstones created in the laboratory?
Natural gemstones are not created in the laboratory. Gemstones created in the lab are referred to as synthetic. ...
Asked in Geology, Jewelry, Rocks and Minerals
What minerals are classified as gemstones?
The most valuable gemstones are the clear, crystalline form of the harder minerals such as diamond, corundum, tourmaline, topaz, and garnet. Other minerals with exceptional clarity or color, and even some rock types are known commercially to be valuable as gemstones, but hardness is a key to frequent wearability. ...
Asked in Geology, Jewelry, Gems and Precious Stones
What is difference between synthetic gemstones and genuine gemstones?
Gemstones are crystalline of minerals which can be cut and polish. Synthetic stones are chemically fabricated product, in my view we can not call it synthetic gemstones they are pure synthetic products. ...
What is the difference between gemstones and birthstones?
There is a very subtle difference between gemstones and birthstones. Birthstones are typically associated with a month, whereas gemstones are more generic. ...