12 Hardest Minerals Found The Earth (2023)

The earth’s crust contains a large number of minerals. However, if we were to rank them according to their hardness, some minerals would be much harder thanĀ others. There are a…

13 Most Expensive Materials In The World 2023

The earth’s rarest and most difficult-to-manufacture materials, which also tend to be among its most valuable, command the highest prices because of the challenges they provide in production. Yet, the…