Bulk ammonite halves, super cute, perfect for jewelry making! 1 Pack is 20 pieces, just like you see in the pictures. You choose which size. Powerful Ammonite - These amazing specimens are fossils from creatures that lived in the sea 240 - 65 million years ago. Ammonite holds ancient energy vibrations, which brings a very different quality energy to any space. Added to the ancient presence is the shape of ammonite - a coil - which creates constant movement and circulation of energy. Feng shui-wise, ammonite is an excellent cure to bring a sense of stability, grounding and protection to any space. A stability that is fresh and dynamic, not stale and stagnant.