Hatton Garden,
London EC1N 8SU
Unleash the power of confidence with verified reports.
OUR SERVICES
Advanced Geological Analysis
Step into the future of geological exploration with GLS's state-of-the-art laboratory. Our advanced technologies provide in-depth geological analysis, offering insights into mineral composition, rock formations, and more.
Screening and Detection Excellence
Trust GLS for the most advanced screening and detection services in the industry. Our cutting-edge technologies distinguish between natural geological formations, lab-created materials, and simulants, establishing us as a reliable authority for authenticity and quality assessment.
Precision Measurement and Documentation
Experience precision like never before with our meticulous measurements, conducted using advanced optical devices tailored to geological specimens. Our digital documentation includes detailed 3D representations, ensuring clarity for scientific understanding and commercial purposes.
Stringent Grading Protocols
GLS has crafted strict grading protocols to guarantee transparency and consistency. Our grading reports are globally recognized, supporting scientific research, academic endeavours, and commercial transactions involving geological specimens
Diamond Services
Diamond Screening Excellence
Benefit from GLS's advanced screening and detection services, trusted by prestigious brands worldwide for authenticity and quality assessment.
Diamond Sorting Precision
GLS offers sorting services for diamond parcels up to 0.25ct, incorporating screening and detection for laboratory-grown diamonds and simulants
What We Do?
How it Works
Diamond Grading
Our Diamond Grading process is the cornerstone of our commitment to precision and excellence. We understand the significance of accurate diamond assessments in the jewellery industry. At every step, our methodology is designed to unravel the unique characteristics of each diamond, ensuring that our customers receive reliable and transparent
Diamond Identification
Diamond Identification is a crucial step in our process, ensuring that each diamond is uniquely recognized and tracked throughout our grading journey. Our commitment to confidentiality and security is reflected in our meticulous identification process, assuring our customers of the individuality and integrity of their precious stones.
Grading Process
Our Grading Process is a meticulously crafted sequence aimed at ensuring consistency, transparency, and accuracy in diamond assessments. With over 50 years of experience, our grading protocols have evolved to become a trusted benchmark in the industry, facilitating confident transactions for both buyers and sellers.
More Details
Mineral Composition and Weight
The journey begins with the precise measurement of geological specimens. GLS's calibrated scales ensure accurate reporting of mineral composition and weight.
Detailed Measurement and Documentation
Using advanced optical devices, we create detailed 3D representations of the geological specimen's structure. Key measurements are presented in comprehensive grading reports, enriching the understanding of each specimen.
Color and Phenomena Evaluation
Our experts meticulously evaluate the colour and phenomena of geological specimens, considering factors such as shape, cut, and unique characteristics. Independent graders and calibrated tools ensure an impartial and accurate evaluation.
Clarity and Finish Assessment
Applying internationally accepted standards, GLS grades clarity at 10X magnification. Our step-by-step technique provides a detailed map of internal and external characteristics, enhancing identification and understanding.
Cut Grading Excellence
For diamonds within the specified colour range, GLS offers precise cut grading based on overall proportions, measurements, and facet angles. Shape-specific requirements and light return grading contribute to a comprehensive evaluation.