Vase. Glass. Beth Shemesh, Israel. 12th – 7th century BCE. University of Pennsylvania Museum of Archaeology and Anthropology.
Reassembled fragments, infilled loss and created housing for storage.
Made of translucent blue-green glass, this footed partial vase stands 12.3cm tall at its highest and is 4.0cm in diameter at the base. The top of the intact portion is marked by a slight lip .5cm high; 2.5cm and 7.5cm below this, .5cm bands are lightly incised around the circumference of the vase. Otherwise, the vase is undecorated. The foot is flat and appears to be of a piece with the body; the lack of mold marks and clean interior indicate that the vase was blown. There are some air bubbles visible in the glass. A string with a paper eyelet is tied around the base of the vase above the foot.
There were nine major pieces of the vase, plus many fragments. The vase appeared to have been at least partially reassembled previously and yellowed adhesive was visible along some edges. The glass was highly weathered and had become laminated and iridescent with age; the layers were thin and very fragile and the vase shed iridescent flakes even when gently handled.
The adhesive fluoresced yellow-green under ultraviolet light, indicating that it was cellulose nitrate.
The adhesive was manually removed, then the edges cleaned with acetone and cotton swabs. The vase was reassembled using 2-% Paraloid B72 in acetone, which was drawn into the joins by capillary action. The flaking layers were consolidated using 5% Paraloid B72 in acetone. A fill for the one major loss was made by preparing Japanese tissue with pigment and 5% Paraloid B72 in acetone; the edges were feathered and the paper applied across the loss.
Storage housing was created using board, batting, foam and Tyvek. Loose pieces of corrosion are stored in a plastic bag and kept in the housing with the vase.