Twins part 1

This is my book,

Abby and Claire were twins, but not identical twins. Abby had short, curly, and bouncy carmel hair and Claire had long wavy carmel hair. They also had different interests and personalities. Claire loved the sea and everything in it and was very chatty. Abby loved horses and was not as chatty as Claire. One day while Claire was swimming she found a really weird and cool shell. Meanwhile while Abby was riding horses she found an odd rock. When they were both home the showed each other what they had found. They found out that the rock fit into the shell and when they stuck together a HUGE beam of light appeared, the next second it was gone. "WOW!!!" Abby exclaimed "That was AWESOME!!!!!!!"