More Than A Mark. Proof you can trust.
From gemstone authentication to product safety and valuations — we give you the independent proof behind every promise.
Gemstone Authentication
Lab-grade reports.
Backed by science.
Trusted by experts
Product Safety Testing
From metal safety to EU/UK compliance –
test before you trade.
Jewellery
Valuations
Insurer-approved, digital-ready valuations
from qualified experts.
Certification
& Reports
Trusted documentation
to back your brand
or resale.
Hallmarking
Still the gold standard. Still part of your story.
Why choose us
Independent & Accredited
245+ years of objective, expert assessment
Fast, Digital-First Services
Mobile-friendly reports, modern workflows
Made for Modern
Trade
Ideal for e-commerce, retail, luxury & insurance
“Birmingham Assay Office helped us validate an entire new collection for launch.”
“Super-fast, super professional. The gemstone reports gave us peace of mind.”
“Our customers love the reassurance of certified valuations.”
