DescriptionFlask made of blown glass with iridescence. The peculiar shape was achieved by compressing the body of the originally piriform flask at four points, when the glass was still hot. Glass-blowing was much more flexible than earlier techniques and allowed for the creation of new shapes, thus giving way to the craftsmen's imagination.
On the neck of the vase there are applied rings. These decorative trails, which are called "snake-threads" and sometimes cover the whole surface of the vase, appear in the the 2nd c. AD but are also encountered in the 3rd, and possibly the 4th c. AD. The manufacture of vessels with such decoration required much skill and attention, which probably affected their price, too. This may explain the rarity and limited distribution of the type.
The iridescence, which can be observed on many ancient glass vessels creating a sense of polychromy, is not an original feature of the glass. In fact, it is the result of continuous corrosion on the surface of the vessels.