Highly Patinated Roman Cobalt Glass

Price: $450

Highly Patinated Roman Cobalt Glass in modern copper “short-tube” reconstruction.

The round blue glass beads in the photo above were commonly made in the first century before Christ to about 100 years after the crucifixion, about 2,000 years ago, if anybody’s counting. The secret of making these beads was lost and rediscovered only in recent times, but now you can’t use cobalt, because it’s needed for radiation treatment and is very rare.