This Roman glass intaglio depicts the god Jupiter as an eagle.

Gems he has returned and will now go on display include an intaglio made from black glass with a bust of Minerva, the Roman goddess of wisdom.

The delicate intaglios, fashioned from amethyst, jasper and carnelian, range in diameter from 5 millimeters to 16 millimeters — bigger than a pencil eraser, smaller than a dime.

A collection-based exhibition is now in the works, focusing on intaglio prints from the Renaissance to the present, likely to open in December.

Then I wanted to step back and make photo etchings out of them — they are photo intaglios.