Business Details
Antique & Vintage Jewellery Experts in Mayfair, London
Established in 1798, we are one of London's oldest family-run jewellers with a rich heritage spanning over two centuries. Our business began in Westminster as a pawnbroker's shop before relocating to Mayfair following wartime destruction during The Blitz. We have maintained continuous family ownership across multiple generations, with Robert McCarthy currently leading operations as a direct descendant of founder John McCarthy. Our expertise lies in curating exceptional antique, vintage, and contemporary jewellery collections while preserving traditional craftsmanship techniques. We offer specialist services including jewellery resizing, pearl restringing, and silver restoration, combining historical knowledge with modern accessibility through our newly launched online shop.Our commitment to exceptional customer service remains unchanged since our founding, evidenced by our ability to complete urgent resizing requests within 48 hours. With extensive experience navigating both physical and digital retail environments, we provide authoritative guidance on antique valuation and jewellery care. Our transparent business practices ensure trust through clear communication about delivery timelines, return policies, and international shipping requirements. This enduring reputation has attracted generations of loyal customers who value our expertise in sourcing unique pieces across diverse price points.
Services
Jewellery Sales
Resizing Services
Pearl Restringing
Antique Appraisal
Online Shopping
Highlights and features
- Family-run business since 1798 with generational expertise
- Specialist antique jewellery valuation and restoration services
- Urgent resizing completed within 48 hours
- Extensive collection spanning three centuries of design
- Transparent pricing with clear delivery and return policies
What people say
Brilliant job
Amazing selection
Excellent customer service
Competitive prices
Warm welcome
Services
Jewellery Sales
We offer an extensive collection of antique, vintage and contemporary jewellery pieces. Our curated selection includes rare 18ct gold rings, diamond clusters, silverware and unique period pieces. Each item undergoes expert authentication and condition assessment before being made available for purchase both in-store and through our online platform.
Resizing Services
Our expert jewellers provide professional resizing for both antique and modern rings. We complete standard resizing requests within two working days while maintaining structural integrity of delicate vintage settings. This service includes expert consultation on appropriate size modifications and post-adjustment quality checks.
Pearl Restringing
We specialise in professional pearl restringing using traditional techniques. Our service includes assessment of clasp integrity, replacement of worn threads, and knotting between pearls to prevent loss. Customers receive expert advice on maintenance schedules based on wear frequency and environmental exposure.
Antique Appraisal
Our family's generational expertise enables accurate assessment of antique jewellery and silverware. We provide detailed provenance research, material analysis, and market valuation guidance. This service benefits both potential sellers and buyers seeking authentication of historical pieces.
Online Shopping
Our digital platform offers access to the full range of available pieces with high-resolution imaging and detailed descriptions. The service includes secure payment processing, international shipping options, and virtual consultation appointments. Customers receive the same expert service and guarantees as in-store purchases.
People
Robert McCarthy
Managing Director
Robert McCarthy is the current director of J McCarthy Jewellers, continuing the family legacy since 1798. As a direct descendant of founder John McCarthy, he combines inherited expertise with modern business practices. He oversees all operations including curation of the antique collection and customer service standards.
Questions
What types of jewellery do you specialise in?
We specialise in antique and vintage jewellery from the 18th to 20th centuries, including rare pieces like 18ct gold rings, diamond clusters, and silverware. Our collection also features contemporary items.
Can you resize rings purchased elsewhere?
Yes, we provide resizing services for rings not originally purchased from us. Our expert jewellers complete most resizing requests within 48 hours while maintaining the piece's structural integrity.
How can I purchase items online?
Browse our collection on the website, select desired items, and complete secure payment. We offer complimentary next-day UK delivery and international shipping with tracking. All online purchases receive the same guarantees as in-store purchases.
What is your return policy?
We offer a 14-day money-back guarantee. Items must be returned in original condition with all packaging. We provide pre-paid return envelopes for UK customers. International returns require prior approval.
Do you offer cleaning services?
Yes, we provide professional cleaning services for jewellery and silverware. Many customers have their pieces cleaned while waiting in-store, with appropriate solutions tailored to each item's materials.
