The sand is 99% pure quartz and has the fineness of sugar. The sand was broken down from a quartz mountain range in the Ice Age. It created a hundred mile alluvial flume.
All Olive shells are unique they vary in size, colors and patterns. The Olive shell was used 9,000 years ago by the Indians for money. Some people believe the "letters" are ancient hieroglyphics and form a DaVinci Code! Still Others believe the Lettered Olive and it's "code" was the inspiration for Edgar Allan Poe's short story "Gold Bug"
Olive shells are a predator, they are able to drill a hole in a bi-valve like a scallop, inject acid and kill their prey.