This winter, as I walked along the shore of a Croatian island with my brother, we searched for shells. I paused by a large rock that had a shiny yellow mineral on its surface. Using another stone, I attempted to extract pieces of the stunning crystal to keep. Without the proper tools, I could only collect a few small fragments using another rock. Did you know that the tough spots in your heart also contain valuable, uncut gemstones? You simply need to put in some effort to un