ROMAN RED JASPER INTAGLIO DEPICTING ALTARS UNDER THE SKY IN SILVER RING Ca. AD 200 - 600. A red jasper intaglio engraved with three vertical altars surmounted by a crescent and star above a lattice-like base. The gem is set in a possibly later silver ring with a recessed bezel integral with a broad hoop that tapers towards the back. Size: D:19.56mm / US: 9 3/4 / UK: T; Weight: 6g Provenance: Private UK collection; previously acquired on the Austrian art market in the 1990s.