Grey Agate Pestle-Mortar
Agate is a microcrystalline variety of 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 and can be common in certain metamorphic rocks.
Aluminum Copper (Al/Cu), Aluminum Chromium (Al/Cr), Aluminum Magnesium (Al/Mg), Aluminum Silicon (AlSi), Aluminum Silicon Copper (Al/Si/Cu), Aluminum Silver (Al/Ag), Aluminum Vanadium (AlV), Calcium Nickel Chromium Iron (Ca/Ni/Cr/Fe), Cerium
