Grey Diamond 2-3mm Rough Nugget - 15-16 Inch HPS1052023 who first discovered the stone

who first discovered the stone in Southern California in 1868

and was first discovered in 1854 in Norway

Ocean Jasper is a commercial name for Orbicular Jasper

The two most popular classes of Australian Opal are Black Opal mined in Lightning Ridge and Fire Opal

Grey Diamond 2-3mm Rough Nugget - 15-16 Inch HPS1052023 who first discovered the stoneDiamond is a rare, naturally occurring mineral composed of pure carbon. Although most people think of diamonds as colorless, they actually occur in almost every color! Also, many people believe that diamonds are formed from coal, but it is not true. Diamonds actually form at high temperatures and pressures that occur in Earth's mantle about 100 miles below Earth's surface.