Tiger Eye Stallion Carving Tourmaline between 65 million up until

between 65 million up until 35 million years ago

and then are later filled in with other minerals

golden -yellow and browns

) The variation in colors is due to trace amounts of other elements replacing the calcium during the crystalline formation

Although the largest Zoisite deposits have been found in Tanzania

Tiger Eye Stallion Carving Tourmaline between 65 million up untilTiger Eye is a finely fibrous, opaque variety of quartz. Technically it is a pseudomorph of quartz, and the surface iridescence and golden color results from inclusions of limonite Jasper is a form of Chalcedony, made up of 90% quartz and 10% morganite. It is composed of microscopically fine fibrous crystals, and it normally shows color banding, stripes, whirls, bull's eye and other random patterns due to impurities in the quartz.