please help me in your own words please

Geology
Tutor: None Selected Time limit: 1 Day

Most gemstones, such as topaz, rubies, sapphires, emeralds, and diamonds, have a common mineral property that makes them gemstones. What is this property? Is that property responsible for their economic value? Why or why not?

Mar 24th, 2015

Most gemstones have a common mineral property called "hardness".  This property makes gemstones highly resistant to scratching.  Due to this property gemstones wear and tear is very minimum and last forever.

This property is responsible for their economic value.  In industrial applications, they are used to cut other hard substances.  So they are mostly used in cutting tools.  Another economic value is their look and appearance.  They look very pretty due to light reflected from them.  Especially diamonds are very valuable for this reason as they are very attractive to look at and highly priced for this reason.

Mar 24th, 2015

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