Description: Agate is a variety of fine-fibre chalcedony that usually has stratified coloring. These strata could have either concentric or linear form. They seem to repeat the contours of underground interstices - geodes, in which the forming of agates frequently occurs. According to one of the versions the name of agate arises from the ancient name of Ahates River in Sicily, where in ancient times this mineral was mined. According to another version, the word agate arises from the Greek word Ahates that means haрру. In any case, the word agate in application to mineral was known in the times of Theofrast (the 4th century BC). At the same time you should note that in ancient times Arabs and Persians called all stripped stones as jazz. The color of agate varies from foam white, yellowish and greenish to almost black. If white colored layers alternate with yellow, red, brown, black or other colored layers, then such variety of agate can have its own name. For example, most b...