At you is a variety of chalcedony characterized by ribbed, strand construction. It occurs in the form of inconspicuous lumps with spherical shapes, almond-shaped or irregular lumps, ranging in size from millimeters to many meters.
From the outside, the agate lump looks like an ordinary stone, and the richness of colors and patterns is revealed only after being cut. Striped structure consisting of differently colored layers, more or less regularly concentric to the center of the solid, it is formed as a result of the periodic change of the dye supplied with the silica solution during the crystallization of successive layers of agate. A variety of colors in different layers and solids as well as a variety of patterns, in which the differently colored layers are arranged, makes it impossible to find two identical or even similar copies of this stone. Depending on the type of stratification, agates are distinguished: ribbon with regular layers, ring structure, landscape with foreign inclusions in the form of "views” with the lake, beach, forests etc., dendritic with inclusions of foreign crystals, dendrytów, like a drawing of mosses, trees or entire forests, melted into stone, and many others. The individual layers can be multicolored or alternating between white and black (onyks), or white and red (sardonyks).
Due to its hardness and wear resistance, agate has long been used in precision mechanics as a material for the production of bearings and resistance prisms for sensitive scales, for making mortars, especially pharmacies, and because of its beauty - in ornamentation for making mugs, cups, furniture decoration and jewelery. The layered color of agate has become the reason for its widespread use in glaucoma – for carving cameos, in which in one of the layers, e.g.. red, a bas-relief was cut out, leaving a second layer, e.g.. White, as background. Variable thickness of the sculpted layer in the case of partially transparent ones, translucent agates allowed the sculptor to extract various shades of color, emphasizing the delicacy and perfection of the rite. Agate is a fairly common ornamental stone, and nice copies can also be found in Poland.