Pioneering Excellence

Explore Our Services Stat Certification

Every gemstone is unique and tells a story...

If you're a jewelry retailer, you know your customers are keenly seeking quality and want reassurance that their purchase is authentic. When you buy a house, you receive a deed. A vehicle comes with a title and registration. It only makes sense to document something as precious as a gem purchase with an official accreditation.

In our laboratories, we meticulously examine your gemstone to unveil its unique story through our world-class expertise. Every facet, inclusion, and sparkling surface is carefully catalogued and painstakingly verified. While its beauty may be subjective, its value is precisely measured by a specific set of characteristics.

Gem Story
Gem Story

The Risk of Buying Uncertified Gems

Any time a diamond, gemstone or piece of jewelry is sold without a verifying certificate, there's a risk involved. You can only speculate on the quality or authenticity of the diamond - and it may not be as advertised. Certified diamonds and gemstones are documented for their quality. Without this documentation, it can be difficult for buyers to be sure of what they are investing in. The growth of e-commerce has significantly increased the importance of certified diamonds in today's market. There's always a risk when buying a diamond 'sight-unseen' and a non-certified diamond is almost impossible to sell online. Therefore, it's essential for jewelry retailers to have accredited gem certification for every stone and jewelry piece they buy.

Avoid the risk!

Get your gem certified
How It Works

How it works

At our laboratories, we make the certification process straightforward and secure: simply visit one of our labs or arrange for secure submission of your item. Our team will then help you formally submit your piece(s), discuss your specific needs (such as diamond grading, colored stone identification, or jewelry testing), and clarify the costs and estimated turnaround time. Following this, your item undergoes an expert examination and analysis using state-of-the-art equipment and adherence to rigorous international standards. Finally, we'll notify you when your report is ready for secure retrieval, providing you with undeniable report of your item's identity and characteristics.

  • Visit us

    Visit any of our laboratories

  • Submit piece

    Submit your piece's

  • Get reports

    Get your reports

What we Offer

Diamond Report

Diamond grading reports offer detailed insights into a diamond's unique features. They're essential for retailers to confirm authenticity and for buyers to evaluate value, as even similar diamonds can vary greatly in price due to their individual qualities.

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Colored Stone Report

Colored stone identification reports offer a detailed analysis of gemstones like rubies, emeralds, sapphires, and tourmalines. These reports specify the gemstone type, whether it's natural or synthetic, and any detectable treatments.

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Stone Sealing

We seal diamonds or colored stones for security and protection, with a summary of the report enclosed within the seal. Breaking the seal releases a chemically generated pattern, indicating tampering.

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Jewelry Report

Our jewelry reports offer a thorough analysis of jewelry, covering materials used and the specifications and grades of any studded stones. These reports are carefully prepared to document even tiny, easily overlooked details.

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Premium Report

Our Premium Jewelry Report comes in a luxury leather box, offering an elegant presentation for the comprehensive analysis of your treasured pieces.

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Jeweler Report

The Jeweler Report is a compact, professional document designed for jewelers and traders of diamond jewelry. It offers key, easily understood information on a diamond's quality, authenticity, and defining characteristics.

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Silvers Report

The Silvers Report is a compact, precise document for jewelers and traders of silver jewelry with colored stones. It provides crucial details on both the silver and gemstones, enabling quick assessment and trade insights.

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Consultation Brief

Our Consultation Service provides a preliminary assessment for your diamonds, colored stones, or jewelry. Our Consultation Brief (Mosheer) serves as an unofficial document, designed to help clients quickly verify their piece and as a preparation for official grading reports and certifications.

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Satisfaction Guarantee

Our priority at Metal Testing Gemological Laboratories is your satisfaction. This means that we stand by our reports completely. No matter what, we are committed to ensuring you are satisfied with the quality of your gemological report. If you have any issues with your report, reach out to us and we will solve it. Our customer service team is here for you and you can trust us to make sure

Satisfaction Guarantee

Frequently Asked Questions

We examine a wide range of gemstones, including natural, treated, and lab-grown diamonds, colored gemstones such as rubies, emeralds, and sapphires, as well as various types of jewelry made from precious metals.

We offer comprehensive services including:

Diamond Grading and Identification Reports: Determining carat weight, color, clarity, and cut (the 4Cs), along with other characteristics.

Colored Gemstone Identification Reports: Identifying the type, natural or treated status, detecting synthetics, providing a geological description, and sometimes origin.

Jewelry Evaluation Reports: Comprehensive evaluation of the entire piece, including stones, metals, and design.

Precious Metal Testing: Determining the purity and composition of metals like gold, silver, and platinum.

Lab-Grown/Treated Diamond Detection: Identifying diamonds that are laboratory-grown and those that have undergone treatments.

Microscopic Photography Services: Providing high-quality images of stones and jewelry.

Laboratory examination ensures accuracy and reliability in identifying the identity, quality, and characteristics of your possessions. This helps with:

Confident Purchasing: Ensuring you get what you pay for.

Confident Selling: Providing a reliable report to potential buyers.

Insurance: Determining the appropriate insurance value for your valuable pieces.

Protection Against Fraud: Detecting imitations or undisclosed treated stones.

Sentimental Value: Better understanding inherited pieces.

We strive to provide our reports with the highest international standards, drawing inspiration from leading global laboratories. By obtaining ISO/IEC 17025 accreditation from the Saudi Accreditation Center, which is internationally recognized by the International Laboratory Accreditation Cooperation (ILAC), our examination reports carry global assurance and recognition.

You can visit one of our laboratories in Riyadh or Jeddah, or contact us by the unified number or email to schedule an appointment or arrange for secure submission of your item.

Yes, we can examine complete jewelry pieces. The stones, and metals will all be assessed within the report. In very rare cases, a specific stone might need to be removed for more precise examination, but this only happens after consulting with you and obtaining your consent.

The examination duration varies depending on the type of stone or jewelry and the requested service. Typically, it takes 3-7 business days. We will inform you of the estimated time upon submission of your item.

Yes, we provide a system to track the status of your item's examination. You will be provided with a reference number that you can use to inquire about the progress of your examination.

Absolutely. The security of your possessions is our top priority. Our laboratory is equipped with advanced security systems, and all items are handled with extreme care by trained experts. We are also insured against any unforeseen incidents.

No, our mission at Metal Testing Gemological Laboratories (MTGL) is to examine and classify gemstones and jewelry based on their gemological and physical characteristics. Determining market value is the purview of specialized jewelry appraisers, as value is influenced by multiple factors such as supply and demand, seller reputation, and economic conditions, which fall outside the scope of gemological laboratories. Our reports provide you with accurate and reliable information about your item's quality and characteristics, which helps you or an appraiser better determine its value.

The cost varies based on the type of service and the size and complexity of the item. Typically, the prices are based on the carat weight of the stones. Please visit the services section of our website or contact us for a detailed price list or a quote for your item.

At MTGL, we focus on examining polished gemstones and jewelry. Therefore, we currently do not examine:

Rough/Unpolished Stones: These require different examination techniques than polished stones.

Organic Gemstones: Such as ivory, amber, pearls, and coral.

A narrow range of Opaque Stones: Some opaque stones that require highly specialized analyses may not be within the scope of our services.

Fancy Color Diamonds: The examination of fancy color diamonds requires highly specialized expertise and equipment, and these are outside the scope of our current services.

MTGL is a Saudi laboratory specializing in the grading and identification of diamonds, colored stones, and jewelry. We provide accurate and reliable reports to help you understand the value and quality of your possessions.