Tag: precious stones
Top 10 of the biggest diamond producing countries
Between 24 and 36 tonnes of diamonds are mined each year from kimberlite or lamproite rocks around the world. Where are the main diamond mines? Which countries have the largest…
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:…