Lot 608

Roman Silver Ring, Green Plasma Intaglio of Mercury

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Roman Silver Ring, Green Plasma Intaglio of Mercury

Estimate: $800 - $1,200

Starting Bid: $400

(0 Bids)

by Artemis Fine Arts
July 30, 2026 8:00 AM MDT
Live Auction
686 S. Taylor Avenue
Suite 108
Louisville, CO, US 80027

Roman, Imperial period, ca. 100–300 CE. A silver finger ring set with an oval intaglio of dark green plasma, a chalcedony variety commonly used in Roman glyptic art. The face is incised with Mercury, messenger of the gods, rendered as a nude youth in contrapposto. He holds a caduceus in one hand and a purse in the other, with a winged petasos on his head — emblems of the deity who governed commerce, travel, eloquence, and the passage of souls. The silver hoop swells to a rounded bezel that grips the stone, its form worn soft by age and handling. Such signet rings served as ornament, personal seal, and talisman, pressed into wax to authenticate correspondence and worn to invoke divine favor over the wearer's fortunes and journeys. Size of intaglio: 0.3" W x 0.4" H (0.8 cm W x 1.0 cm H); of ring: 1" D x 0.4" H (2.5 cm D x 1.0 cm H); US ring size: 8.25; silver quality: 94.8%; weight: 5.6 grams.

Mercury (the Roman Hermes) was among the most frequently engraved deities in Roman gem-carving, a natural patron for the merchants, traders, and travelers who formed much of the ring-wearing citizenry. His attributes read as a compact vocabulary: the caduceus, a herald's staff entwined by serpents, marked him as divine messenger and negotiator of peace; the marsupium, or money-purse, tied him to trade and prosperity; and the winged petasos and sandals signaled his swiftness across the boundaries of the mortal and divine worlds. As psychopomp, he also guided the dead to the underworld, lending such an intaglio a protective, apotropaic dimension beyond its everyday use as a sealing device.

Plasma, a dense green variety of microcrystalline quartz (chalcedony), was prized by Roman engravers for its even tone and fine grain, which held crisp detail under the drill and wheel.

Please note that this ring is of ovoid form and thus may not fully correspond with the US ring size stated in the dimensions. The interior of the ring measures to 19 mm by 20 mm, which more closely corresponds to a US ring size of 9.25 to 10.25.

Provenance: private Arden, North Carolina, USA collection, acquired 2025; ex-Palmyra Heritage Gallery, New York, New York, USA; ex-private Vienna, Austria collection, acquired 1990s

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Item # 203602

  • Condition: Small chip to lower edge of intaglio as well as some chipping to pie crust bezel. Some expected surface wear commensurate with age, but, otherwise, intact, excellent, and wearable with clear imagery.

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