SGL Labs

SGL Labs Globally Trusted in Diamond Certification, Gemmology Education & Screening Instruments. Verified Diamonds Marketplace. Dubai - London - Dhaka - Kathmandu I India
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We are a global gemological laboratory for all kinds of diamonds, gemstones & jewellery. We have 13 labs across the globe and work with the newest technology and under the expertise of a highly qualified team.

08/09/2026

Redefining Transparency, SGL proudly inaugurated its state-of-the-art Experience Center in Thrissur, Kerala, marking another step forward in making diamond certification more transparent, accessible, and consumer-friendly.

The center was inaugurated by Mr. Rajesh Kalyanaraman, Executive Director, Kalyan Jewellers, and Mr. Varghese Jos Alukkas, Managing Director, Jos Alukkas, in the presence of SGL’s Co-Founders & Directors, Mr. Chirag Soni and Mrs. Shirin Bandukwalla, along with distinguished members of the gems & jewellery fraternity.

Designed with a consumer-first vision, the SGL Experience Center takes visitors beyond the traditional 4Cs by providing an immersive journey into the diamond certification process, where every step comes to life through cutting-edge innovation, powered by the expertise of SGL’s gemologists.

With the launch of its Thrissur Experience Center, SGL continues to set new benchmarks in transparency, education, awareness, and consumer confidence, empowering people to see diamonds differently and choose with confidence.

05/09/2026

SGL presents episode 14 of Carats & Conversations featuring Mr. Ashyanth Visvanathan, CEO of Sumangali Jewellers

Sumangali Jewellers has a legacy dating back to 1979. Over the decades, the brand has built a strong reputation for trust, craftsmanship and an extensive selection of traditional and contemporary jewellery. It's expertise spans gold, diamonds, silver and distinctive antique and Nakshi jewellery, with a particular connection to the rich jewellery traditions of the Kongu region.

Learn more about the story behind Sumangali Jewellers on this episode of SGL's Carats & Conversations
https://youtu.be/BzqtbJ-YyhY

Redefining Transparency, SGL proudly inaugurated its state-of-the-art Experience Center in Thrissur, Kerala, marking ano...
04/09/2026

Redefining Transparency, SGL proudly inaugurated its state-of-the-art Experience Center in Thrissur, Kerala, marking another step forward in making diamond certification more transparent, accessible, and consumer-friendly.

The center was inaugurated by Mr. Rajesh Kalyanaraman, Executive Director, Kalyan Jewellers, and Mr. Varghese Jos Alukkas, Managing Director, Jos Alukkas, in the presence of SGL’s Co-Founders & Directors, Mr. Chirag Soni and Mrs. Shirin Bandukwalla, along with distinguished members of the gems & jewellery fraternity.

Designed with a consumer-first vision, the SGL Experience Center takes visitors beyond the traditional 4Cs by providing an immersive journey into the diamond certification process, where every step comes to life through cutting-edge innovation, powered by the expertise of SGL’s gemologists.

With the launch of its Thrissur Experience Center, SGL continues to set new benchmarks in transparency, education, awareness, and consumer confidence, empowering people to see diamonds differently and choose with confidence.

03/09/2026

SGL’s newest experience center in Thrissur will be inaugurated by

Mr. Rajesh Kalyanaraman, Executive Director, Kalyan Jewellers &
Mr. Varghese Jos Alukkas, Managing Director, Jos Alukkas.

📅 4th September
🕦 11:30 AM
📍 Capital City, Thrissur, Kerala

Redefining transparency, SGL Experience Centers take visitors on an immersive journey through the world of diamond certification!

Where every step comes to life through cutting edge innovation, powered by the expertise of SGL’s gemologists.

01/09/2026

SGL’s newest experience center in Thrissur!

The SGL Thrissur Experience Center will be inaugurated by
Mr. Rajesh Kalyanaraman, Executive Director, Kalyan Jewellers, and
Mr. Varghese Jos Alukkas, Managing Director, Jos Alukkas.

📅 4th September
🕦 11:30 AM
📍 Capital City, Thrissur, Kerala

29/08/2026

98 Years of Legacy & Five Generations of Brilliance | SGL's Carats & Conversations | Episode 13

For nearly a century, AVR Swarna Mahal has been a name synonymous with trust, purity and the rich jewellery traditions of South India. Founded in Salem in the late 1920s, the brand has evolved across five generations while staying deeply rooted in the values that built its legacy.

In our latest episode, we sit down with Mr. AVR Siddhanth, 5th generation Director of AVR Swarna Mahal, for a conversation that goes beyond jewellery, exploring the journey of a family legacy, the changing expectations of today’s jewellery consumer, and the responsibility of carrying a heritage brand into it's next chapter.

Watch the full conversation with Mr. AVR Siddhanth only on SGL's YouTube
https://youtu.be/ZAwEWMXsfi4

26/08/2026

Something brilliant is making its way to Kerala

We could tell you what’s coming…
but where’s the fun in that?

Take a guess in the comments below!

22/08/2026

SGL presents episode 13 of Carats & Conversations in conversation with Mrs. Karishma Velani Nagpal, Vice President of Virtual Diamond Boutique

Virtual Diamond Boutique, or VDB, is a global B2B marketplace and technology platform that empowers retailers, wholesalers, and manufacturers with cutting-edge tools for sourcing, e-commerce, and virtual inventory.

With a mission to connect the jewelry industry through innovation and technology, VDB has become a trusted partner to businesses around the world.

Full Episode on SGL YouTube
https://youtu.be/YKZ6mIjg_nU

THE SGL PAVILION AT GJS 2026An exclusive, invite only business ecosystem, curated by SGL!📍 GJS Diwali Edition 2026JWCC, ...
22/08/2026

THE SGL PAVILION AT GJS 2026

An exclusive, invite only business ecosystem, curated by SGL!

📍 GJS Diwali Edition 2026
JWCC, BKC, Mumbai
📅 2nd I 3rd I 4th October

Only selected retailers will receive an invitation through an SGL Representative

To apply for THE SGL EXPERIENCE
📞 +91 81049 80856 I +91 86553 87662

Or register your interest through the following form
https://forms.gle/gK3RbXjkpSUmQVDv9

August brings together three gemstones with remarkably different identities!Peridot, Spinel and Sardonyx each offer gemm...
17/08/2026

August brings together three gemstones with remarkably different identities!

Peridot, Spinel and Sardonyx each offer gemmologists a distinct set of clues.. from Peridot’s strong birefringence and characteristic doubling, to Spinel’s optical properties that help distinguish it from ruby, and Sardonyx’s natural colour zoning and banding that make every specimen unique.

Beyond their colour and beauty, these stones remind us that every gemstone carries a story written in it's chemistry, structure and growth

At SGL, we look beyond the beauty to understand what makes every gem unique.

Know your gemstone. Know what’s inside.

Address

Suite 49, 88/90 Hatton Garden
London
EC1N8PN

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm
Saturday 9am - 6pm

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