This is orbicular Ocean Jasper from Madagascar. This gemstone variety is silicified rhyolite flow from off the northwest coast of Madagascar. It can only be seen and collected at low tide. The area has no road, so the material must be transported to civilization by boat.

This material was first written about in 1922 and than the location was actually lots for almost 80 years!

Ocean Jasper was named because of its resembalance to the foam of the ocean as it recedes back into the ocean, with its wavy patterns of green-gray, white, cream, beige, brown, pink and marooon. The Greek origin of the word jasper, iaspis, means "spotted stone." It is a member of the chalcedony family, or a microcrystalline quartz, and it has a hardness of about 7 on the Moh's scale.