Rockhounding in Connecticut – What Rocks You Can Find and Where
Explore Rockhounding in Connecticut
Rockhounding in Tennessee – What Rocks You Can Find and Where
Upcoming Rockhounding Events in Tennessee Pearl Streak: White Hardness: 3 Chemical Formula: CaCO3 Pearls are an organic mineral formed inside a mollusk. The mollusk takes aragonite, the same mineral that makes up its shell, and builds up concentric layers around any foreign particle that enters the mollusk’s mantle. Pearls vary widely in color and shape,…