Visit Our Hong Kong Shop
Central · Hong Kong
ASSAY × GAD & CO.
131 Queen's Road Central·Sun–Fri 10:30–7·Walk-ins welcome
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No solicitations, please
AddressZhongcai Centre
131 Queen's Road Central
Central, Hong Kong
HoursSunday – Friday: 10:30 AM – 7:00 PM
Saturday: Closed
Walk-ins welcome
Phone+852 6022 0282
Private viewingsBy appointment · 24 hours notice for pieces held off-site
Chat on WhatsApp Book by EmailAt This Location
What we offer in the shop
Custom Jewelry Creation
Design a piece from scratch with our gemologists — from stone selection to final setting, made at our own bench.
Ready-Made Jewelry
A rotating in-store collection available for immediate purchase — including pieces you will not find online.
Sell or Trade
Bring in your jewelry or watch for an honest offer on the spot, or trade it toward something new.
Repairs & Restorations
Sizing, resetting, polishing, and full restorations of antique and estate pieces, done in-house.
Our Story
Same ownership. Same pieces. Two names.
Every Assay piece comes from the house of Gad & Co., Hong Kong, est. 1983.
The Parent House · Est. 1983
Gad & Co.
Where it all began. For over four decades, our family has bought, sold, and crafted fine jewelry from the heart of Central. Led by Benzion Gad, Gad & Co. is the foundation of everything we do — the vault, the gemologists, and the standards behind every piece that carries our name.
The Online House · USA
Assay Jewelers
The next generation of the same family, led by Josef Gad from the United States. Assay brings the Gad & Co. collection and standards to the world online — certified gemstones, luxury watches, and one-of-a-kind estate pieces, shipped fully insured worldwide.
Our story, told by the family
Seen something online?
Every piece on assayjewelers.com belongs to the same family collection. Message us on WhatsApp with a link to any piece, and we will arrange to have it available for you to see in person at Gad & Co. in Central.
Arrange a Viewing