Our story

A traditional jewellers, proudly Dún Laoghaire

Costello Jewellers sits on Northumberland Avenue in Dún Laoghaire, just off the main street and a short stroll from the seafront. Step inside and you'll find cabinet after cabinet of carefully chosen pieces — hallmarked 9ct and 18ct gold, brilliant diamonds, coloured gemstones, freshwater pearls and sterling silver.

We're a jewellers in the old-fashioned, good sense of the word: knowledgeable, friendly and happy to take the time to help you choose. There's no pressure and no rush.

We're also a stockist of Citizen watches, including the Eco-Drive range — beautifully made timepieces that never need a battery.