Fee Mining Sites
May 24, 2013 | RockTumbler.com
Lots of people enjoy going to fee mining sites where you can prospect inactive surface mines, mine tailings, soil, sediments or outcrops and keep any rocks, gems, minerals or fossils that you find. Examples include: Herkimer Diamond Mines where you can search for doubly-terminated quartz crystals, and Crater of Diamonds where you might be lucky enough to find a real diamond.
Diamonds from Brazil?
September 25, 2013 | Gemological Institute of America
Few people think of Brazil as a source of diamonds, but in the 1700s the country was the world's leading supplier of gem-quality diamonds. Production continues there today with about 25,000 carats produced per year.
Related: The only producing diamond mine in the USA.
Diamonds Do Not Form From Coal
April 22, 2013 | Geology.com
How diamonds form is one of the most common geological misconceptions. Diamonds form under a variety of conditions that rarely, if ever, involve coal as a source of carbon. In fact, most diamonds formed long before the first coal swamp or land plant!