I recently visited the Colorado School of Mines (https://www.mines.edu) They have a very impressive collection of various rocks and minerals from around the World and the USA.
I took some photos of good ole Galena as it comes out of the ground. The samples impressed me, perhaps some will find them interesting. They have many more samples, that I have photos of, my daughter was saying, "Dad, why do you need pictures of all these rocks". I kept asking her to get photos with her phone.
The earth and all of its rocks and minerals are fascinating to me. Not sure how to load the High Resolution photos here.