• Expert Jewellery Evaluations

    Done while you wait by an Accredited Senior Gemmologist (AGA)

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  • Expert Gem And Jewellery Appraisals

    We bring decades of proven industry expertise.

  • Friendly Assistance

    The Gem Lab is the place to go for all your gemstone appraisals and training.

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Welcome to The Gem Lab –
the place to go for all your gemstone certification, appraisals and training.

With highly qualified staff and an owner who loves to share his knowledge, you’ll be pleased you called.

Courses

Do your staff have all the answers when it comes to questions about gemstones? Would you like them to get training, but can’t afford the time or costs of a six-month course?

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Grading System

The ICSL system was introduced to the trade in 1982 by the Independent Coloured Stones Laboratory. ICSL is the acronym for ‘Independent Coloured Stones Laboratory’.

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Lab Reports

We offer impartial, unbiased valuations on jewellery, diamonds and coloured gemstones. Unbiased because we do not buy and sell jewellery.

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Services & Fees

A gemmologist is the only person who can distinguish between synthetic and artificially treated gemstones vs genuine gemstones by studying inter alia growth patterns and inclusions.

Download Our Pricelist View Services Gemstone Verification Table

About Us

The Gem Lab is the place to go for all your gemstone certification, appraisals and training. With highly qualified staff and an owner who loves to share his knowledge, you’ll be pleased you called.

For the past 30 years (1989 – 2019) we have offered a professional service to the industry. Jeremy Rothon started his career under the guidance of the world renowned gemmologist, Ian Campbell.

The Gem Lab adhere to the international grading standards, and to ensure that every customer entrusted to each of our precious stones in the world’s most accurate and consistent color gem identification and grading.

You can rest assured that The Gem Lab certified gems are thoroughly checked and graded by a qualified and experienced gemmologist. That’s why dealers from around the world insist on The Gem Lab certificates.

What our customers say about us

“ Jeremy Rothon has been known to me for a good many years. He was a good reliable member of the South African Gemmological Association and started up his own labortary in Durban South Africa where from… “

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“ I have personally known Jeremy for approximately thirty years. Therefore it is with great pleasure that I had an opportunity to be able to give this testimonial in respect of his personal and academic… “

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grading systems

Consistent Grading Standards

I started The Gem Lab to provide a unique service to the gem and jewellery industry, which includes gem and jewellery valuations. This is important because we don’t want to be found selling stones that aren’t authentic, or under- (or over!) insuring a precious stone.
fake rough stones

Gem Alert – Fake Rough

I started The Gem Lab to provide a unique service to the gem and jewellery industry, which includes gem and jewellery valuations. This is important because we don’t want to be found selling stones that aren’t authentic, or under- (or over!) insuring a precious stone.

Gem Alert – Lab Certificate Fraud

I started The Gem Lab to provide a unique service to the gem and jewellery industry, which includes gem and jewellery valuations. This is important because we don’t want to be found selling stones that aren’t authentic, or under- (or over!) insuring a precious stone.

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