Jasper has a grainy structure so it is generally put into a group by itself by can also be considered a chalcedony. Jasper can come in most colors but it is usually stripped or spotted and opaque. It can occasionally be dyed and it is usually matter of personal opinion on which colors to buy. Jasper is thought to help sciatica, the pancreas and even troubled toenails. It is also believed that Jasper brings forth truth and rids negativity.