The Ancient Roman Bullseye Agate Hippocampus Intaglio Signet Ring
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This stunning ring holds a beautiful ancient Roman intaglio at its heart, featuring an inset carving of a hippocampus. In Roman symbolism, a hippocampus represented Neptune’s power over the sea and likely served as a protective emblem for safe travel or protection from nature's forces. The hippocampus is carved into a bulleye agate, showing black, white, and orangish-brown layers.
The stone is in a rose gold setting, leading to a rose gold band. The intaglio, though Roman, was set into the piece in the 19th century.
Provenance: Acquired at public auction from a reputable fine-art and antiques auction house (London, UK). Previously in a private collection.
Please note that this ring is currently on display at Hemswell Antique Centres and will have a delivery delay of 3-4 working days.
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The Details
- Era
- Roman Intaglio set in the 19th century
- Metal
- Tests as 14ct Rose Gold
- Weight
- 5.40g
- Band Width
- 3.20mm
- Head Size
- 14.23mm x 11.69mm
- Size
- X — US 11¾ · EU 66.2
- Condition
- Good, light marks commensurate with age
Due to this ring's age, it is not included in our Complimentary Resizing service
The Gemstones
Dimensions: 12.50mm x 9.70mm x 4.00mm
Why We Love It
- Incredible historic piece
- Intricate hippocampus intaglio
- Fabulous bullseye agate gemstone
- Independent Expert Report
Independent Expert Report
This ring includes an independent jewellery assessment report completed by Crystal Clear Valuations (FJVA FIRV FGA DGA FNAJ AJP PJValDip PJGemDip PJDip PJManDip). The certificate is included with your purchase and a scanned copy can be seen in the image gallery above.

Complimentary Resizing
We offer complimentary ring resizing on the majority of our rings exceeding £250, ensuring your chosen piece is the perfect fit for you.
Wherever you see the Complimentary Resizing selector on a ring, you can choose to have the ring resized at the time of your order, or to have it delivered first with a finger measure so you can check your size and easily send it in for complimentary resizing.
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Complimentary Next Day Delivery
Learn MoreFor UK orders we ship using Royal Mail Special Delivery, so your ring arrives the day after shipping.
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30 Day No Quibble Returns
Learn MoreAt Antique Jewellers, customer satisfaction is our top priority. If you're not happy with your ring, you can return it within 30 days for a full refund.
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Have a question?
Frequently Asked QuestionsIf you've any questions about a piece or anything else, drop us an email to hello@antiquejewellers.com and we'll be happy to help!