Agate is a microcrystalline variety of quartz (silica), chiefly chalcedony, characterized by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks but can be common in certain metamorphic rocks. These carnelian agate stones become famous by the increasing popularity of Akik in Indonesia. The Stone can be used for ring, pendant, earring or else. The colors of diversities make these stone worth and precious.