The U.S. Diamond Mine Where You Can Keep What You Find
Crater of Diamonds State Park in Arkansas is the only diamond mine in the U.S. where the public can search for and keep any diamonds they find. This unique site,…
gemstones
12 Hardest Minerals Found The Earth (2025)
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 than others. There are a…