Not only do semi-precious stones make a Cannonball trumpet beautiful, they affect the sound. It is amazing, but true. We have conducted study after study and not only
heard it, but proved it scientifically. We have a patent pending on the use of stones, and we hope to complete the patent soon. There are 4 semi-precious stones,
each meticulously hand polished and set onto the Stone Series Big Bell Professional Series. There are many choices of stones to choose from.
Look at our stones page for more information.
