Dún Laoghaire · Est. on Northumberland Avenue
Gold and diamond rings, necklaces, earrings and pearls — plus Citizen watches. Discover a piece online, then come in and make it yours.
Everything you see is in our cabinets in Dún Laoghaire, ready to try on.
Spot something you love? Register interest and we'll hold it for you.
9ct & 18ct gold, genuine gemstones and pearls — quality you can trust.
About the shop
For years, Costello Jewellers has been a familiar face on Northumberland Avenue — a proper, traditional jeweller where you're welcome to take your time. Our cabinets are full of hallmarked gold, sparkling diamonds, freshwater pearls, sterling silver and a fine selection of Citizen watches.
Whether it's an engagement ring, a gift, or a little treat for yourself, we'll help you find exactly the right thing — and there's never any pressure.
More about us
Find us
1 Northumberland Avenue
Dún Laoghaire, Co. Dublin
