Seller: nightingale_box (848) 97.4%, Location: Bangkok, default, Ships to: Worldwide, Item: 283315961841 Mosaic glass beadDate: 1 century BC to 2nd century ADMosaic cane glassAround the 7th century BC, the stratified technique became most common, where the craftsman made the eye and its ring by applying pre-made disks of decreasing size on top of each other. A broken stratified eye bead shows all these layers (or ‘strata’) in cross-section. Stratified eyes can be made in several manners. The layers can be built right on the bead, first applying the outer ring, then a middle ring, then the center of the eye. This is very difficult because one is working with hot, softened glass and shapes are difficult to maintain. Alternately, the whole stratified eye could be pre-made, then applied onto the base bead, which presumably provided more control. The eye could be pre-made face up, or face down, letting the softened ring disks sag around the inner layers. Eventually, craftsmen premanufactured whole strips of several eyes that were inserted as a row on the base bead. Condition: Original Genuine ancient carnelian Gemstone.