AGI

AGI agi has been at forefront of diamond grading and certification since its inception almost 50 years ago, helping our customers achieve their goals.

We are uniquely positioned to provide you with a superior service and a quality report which will help achieve more sales and boost customer confidence by providing you with an expert, unbiased third-party report to verify the quality of the diamond you are selling. With an agi diamond grading report you are not only receiving a diamond document from a premier diamond grading laboratory, but you a

re assured that you are selling an appropriately valued diamond graded with the gemmological industry's highest standards of evaluating the 4 C's.

Diamond under microscope 💎
17/06/2026

Diamond under microscope 💎

🔍 Ever wondered what gemmologists see that others don't?At AGI, we're passionate about diamonds, gemstones, and the scie...
11/06/2026

🔍 Ever wondered what gemmologists see that others don't?

At AGI, we're passionate about diamonds, gemstones, and the science behind certification.

Follow us on Instagram for:
💎 Fun diamond facts
🔬 Behind-the-scenes gemmology
📋 Certification insights
✨ Beautiful jewellery and gemstones

📸 Follow us: .uk
https://www.instagram.com/agigems.uk?igsh=ZTNxZDB6bDlkazdh

See diamonds through the eyes of experts.

Every diamond is unique.The internationally recognised 4Cs help determine a diamond's quality and value.Understanding th...
10/06/2026

Every diamond is unique.

The internationally recognised 4Cs help determine a diamond's quality and value.

Understanding them helps you make informed decisions when buying jewellery.

Behind every brilliant diamond is a process of precision and trust.AGI certification ensures what you see is exactly wha...
26/05/2026

Behind every brilliant diamond is a process of precision and trust.
AGI certification ensures what you see is exactly what you get. 💎

Buying a diamond? Make it certified. 💎AGI grading gives you clarity, confidence, and complete transparency.
19/05/2026

Buying a diamond? Make it certified. 💎
AGI grading gives you clarity, confidence, and complete transparency.

Certified Confidence 💎Every diamond tells a story — we make sure it’s one you can trust.At AGI, precision meets integrit...
12/05/2026

Certified Confidence 💎
Every diamond tells a story — we make sure it’s one you can trust.
At AGI, precision meets integrity in every detail.

💎 Fun Fact :Diamonds can survive a billion years underground…And apparently AGI can survive a few years off Social media...
02/12/2025

💎 Fun Fact :
Diamonds can survive a billion years underground…
And apparently AGI can survive a few years off Social media 😅

We’re back — refreshed, upgraded, and ready to share real lab insights, gem tips, and all things certification.

Thanks for being here. Let’s do this 💙

Welcome to AGI Gems!We’re an independent gemstone and diamond certification laboratory dedicated to accuracy, transparen...
26/11/2025

Welcome to AGI Gems!

We’re an independent gemstone and diamond certification laboratory dedicated to accuracy, transparency, and trust.

Every report we issue represents our promise of impartial grading — powered by science, experience, and integrity.

Whether you’re a jeweller, collector, or gem enthusiast, we’re here to bring clarity and confidence to every stone.

🔬 Independent. Accurate. Trusted.

Confused about colours?Check out our simple colour charts.
11/05/2016

Confused about colours?
Check out our simple colour charts.

Address

Vangate House, 21 Bury Old Road
Manchester
M250EY

Opening Hours

Monday 9:30am - 3pm
Tuesday 9:30am - 3pm
Wednesday 9:30am - 3pm
Thursday 9:30am - 3pm
Friday 9:30am - 12pm

Telephone

+441617204406

Website

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