Agate belongs to the chacedony group in the great family of quartz. It named after the antique Achates river (today Dirillo in Sicily), wich was its original locality. We can read first about this stone in the greek natural philosopher ‘Theoprastus’ scripts. Its pieces which are similar to ball or almond can be found in volcanic gasbubbles caves. After cutting and grinding can be seen the cellular or tight geodes, which consist of the coalescence of different concentrical layers. Natural nice colorful agates exist, but mostly agates are occured in greyish-brown “boring” colours. Therefore agates are coloured by special treatments (flooding into different tinctures, sours, heating/ignition) etc. Mostly the very colourful specimens are coloured. Nowdays the main localities: Brazil, Mexico, Uruguay, USA etc. We can speak about several kinds of agates, but a part of them are agates only in their names. Agate version (better known): Botswana agate, star agate, crazy lace agate, dendritic agate, tree agate, white agate, blue lace agate (striped blue chalcedony), snake agate, moss agate, eye agate, fire agate etc.