World Gemological Institute

World Gemological Institute The World Gemological Institute W.G.I main objective is to support, build and maintain a sustainable world-class Gemological services to all the customers.

The World Gemological Institute (WGI) was founded to provide professional, precise and efficient gemological services to the global jewellery industry. Our newest headquarter Laboratory has opened in the heart of London, Hatton Garden to meet the highest demand of the jewellery market. With the past 30 years, the WGI along with our team of experts have built a solid standing reputation as one of t

he leading Laboratory in the diamond industry. Our appraisals and lab reports are recognized worldwide by insurance companies, private jewellers, retailers and wholesalers. We offer a range of different appraisals and comprehensive laboratory services to suit customer needs.

28/05/2026

Even though Aquamarine, Topaz and synthetic Spinel may look similar, gemologists separate them through refractive index, pleochroism, inclusions and specific gravity.

Aquamarine shows a softer watery blue and natural growth features, topaz has higher brilliance and perfect cleavage, while synthetic spinel is singly refractive, often too clean, and may contain curved growth lines or gas bubbles under magnification.
www.wgi-global.com 💎
BlueGemstones GemIdentification Gemologist JewelryEducation PreciousStones GemTesting JewelryLovers Minerals LuxuryJewelry FineJewelry GIA GemstoneLover JewelryAddict CrystalLovers GemstoneEducation

06/05/2026

At World Gemological Institute London, every piece of jewellery tells a story and we make sure it’s documented with precision, expertise, and integrity.

We provide full gemological reports for diamonds and gemstone jewellery, including detailed analysis of:

💎 Authenticity verification (if possible)
💎 Carat weight & measurements
💎 Cut, colour & clarity assessment
💎 Treatment disclosure
💎 Origin opinion (where applicable)
💎 Professional grading documentation

Because true luxury is backed by knowledge.

LuxuryJewellery Gemology DiamondGrading

Yesterday at Annabel’s, we hosted an “Introduction to Diamonds” course, designed as an interactive short talk. The sessi...
10/04/2026

Yesterday at Annabel’s, we hosted an “Introduction to Diamonds” course, designed as an interactive short talk. The session offered guests a refined yet accessible insight into the world of diamonds, covering key elements such as the 4Cs, stone characteristics, and what truly defines quality and value. www.wgi-global.com

Dear Valued Customer,We would like to inform you that WGI Lab will be closed the following days in observance of the hol...
01/04/2026

Dear Valued Customer,

We would like to inform you that WGI Lab will be closed the following days in observance of the holidays.
We will resume normal operations the following week and will respond to all enquiries as soon as possible upon our return.
Wishing you a pleasant holiday period.

Our holiday schedule:

Closed: 2nd – 6th April 2026
Open: Tuesday 7th April 2026
Closed: 8th – 9th April 2026
Open as usual: 10th of April 2026

For more information, please check our website: www.wgi-global.com

11/03/2026

At WGI, our gemologists are the heart of everything we do.

Behind every report is hours of meticulous analysis, advanced testing, and expert observation. From natural diamonds and coloured gemstones to complex treatments and origin determination, our team combines scientific precision with years of hands-on experience in the world of fine jewellery. 💎🔬 Proud of the expertise, dedication, and passion our WGI gemologists bring to every stone that passes through our laboratory. 💎✨

BehindTheScenes

At the World Gemological Institute (WGI), we combine expertise, precision, and advanced gemological knowledge to unlock ...
05/03/2026

At the World Gemological Institute (WGI), we combine expertise, precision, and advanced gemological knowledge to unlock the true potential hidden inside every rough gemstone.

Because every masterpiece begins in its raw, natural form. www.wgi-global.com

Gemologist GemLab PreciousStones FromRoughToBrilliance

At World Gemological Institute London, every piece of jewellery tells a story and we make sure it’s documented with prec...
26/02/2026

At World Gemological Institute London, every piece of jewellery tells a story and we make sure it’s documented with precision, expertise, and integrity.

We provide full gemological reports for diamonds and gemstone jewellery, including detailed analysis of:

💎 Authenticity verification (if possible)
💎 Carat weight & measurements
💎 Cut, colour & clarity assessment
💎 Treatment disclosure
💎 Origin opinion (where applicable)
💎 Professional grading documentation

Because true luxury is backed by knowledge.

LuxuryJewellery Gemology DiamondGrading

18/02/2026

Join us for a landmark moment in diamond education 💎

On Sunday, 19 April, WGI proudly presents the first Diamond Masterclass in Bucharest, hosted at the iconic InterContinental Athenee Palace in Bucharest.

This exclusive experience is designed for jewellery professionals, luxury enthusiasts, investors, and anyone passionate about the fascinating world of diamonds.

During this immersive masterclass, you will discover:
💎 How to evaluate diamonds like an expert
💎 The truth about diamond treatments and market value
💎 Investment insights and global trends
💎 The secrets behind rarity, pricing, and prestige

Led by WGI’s experts, this is more than a course, it is an elevated luxury experience, combining knowledge, networking, and refinement in one of Bucharest’s most prestigious venues.

✨ Registration is now open.
⚜️ Limited places available.

Secure your seat and become part of a defining moment in Romania’s diamond education journey. Link in BIO

A true masterpiece of timeless brilliance ✨This extraordinary antique bracelet showcases an impressive 22.85 carats of n...
17/02/2026

A true masterpiece of timeless brilliance ✨

This extraordinary antique bracelet showcases an impressive 22.85 carats of natural diamonds, meticulously set in an intricate openwork design. The refined craftsmanship highlights a harmonious blend of floral and scroll motifs, creating exceptional movement.

Each diamond has been carefully examined and authenticated by WGI Lab, ensuring precision in grading and confidence in quality.
www.wgi-global.com
FineJewellery LuxuryDetails

Address

•100 Hatton Garden, Suite 207
London
EC1N8NX

Telephone

+442031980478

Website

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