Tag: Gemology
The minerals of the world in 19 photos
Main constituents of rocks, minerals are substances that have a chemical composition and properties physical well defined. They are formed during the different stages of the life of the planets:…
Quiz: do you recognize these minerals?
Rare and precious or very common, there are now nearly 5,000 known minerals and we are discovering new ones every year! Can you recognize these 10 minerals? You will also…