What began as a vision to bring integrity and transparency to the diamond trade has today grown into a global presence across 25 locations, 5 countries, 209 geo footprints.
Founded in 2007 in London, SGL has become one of the world’s most trusted names in diamond certification, powered by 500+ dedicated professionals worldwide.
In recent years, we’ve launched SGL Experience Center in Dubai, Thrissur, Mumbai, Jaipur, Surat & Hyderabad! Welcoming you with spaces to engage transparently with state-of-the-art instruments & gemmologists with expertise in the trade.
Every certificate we issue is more than just a document; it is a symbol of reliability, backed by science and driven by passion.
Step into SGL Dubai, your gateway to trusted diamond certification in the heart of the Gulf’s diamond trade.
See the full certification process happen right in front of you. Expert gemmologists use advanced tools to show you how it works.
At our BKC Experience Center, Mumbai’s business hub meets diamond science, right in the heart of the Bandra Kurla Complex.
Follow every step of the certification process as it unfolds right in front of you. Our expert gemmologists use advanced instruments to bring the entire process to life.
Located in India’s diamond cutting and polishing capital, SGL Surat shows you where diamonds are actually made.
Watch the full certification process happen right in front of you, guided by our gemmologists and advanced instruments.
SGL Hyderabad brings the Experience Center to South India’s growing gems and jewellery trade.
Watch every step of certification unfold in front of you. Our expert gemmologists use advanced tools to show you the complete process.
Located in Chembukkav, SGL Thrissur adds certification transparency to Kerala’s celebrated “Gold Town” and its centuries-old jewellery tradition.
See every step of the certification process through advanced instruments, backed by our gemmologists’ expertise.
Instant & Non-Invasive detection of Natural & Lab Grown (CVD & HPHT) Diamonds
Smart Tray screening that instantly counts stones and uses glowing colour-coded signals to identify natural vs. lab-grown diamonds.
One device that screens lab grown diamonds (CVD, HPHT) & natural diamonds in jewellery.
Let’s admit, diamonds are expensive. More so, you don’t buy them frequently (like your groceries). That said, diamonds are a considerable financial investment and symbolise trust and commitment.
Diamond grading reports vouch for the authenticity and characteristics of your diamond. Its importance is immeasurable. Since it is a scientific blueprint, it would be wise to understand its key sections.
Diamond certification ensures that each stone is assessed by experts under strict parameters. This guide explains how certified diamonds uphold authenticity, transparency, and buyer confidence.
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SGL’s advanced diamond screening technology, now available through an exclusive partnership with Divine Solitaires.
Diamond scams are increasingly frequent. Learn the techniques and tips to identify them and buy safely.