Expert grading and certification for rare and investment-grade diamonds
At Vetera Collecta, we understand that when investing in rare diamonds, accurate certification is not just important—it's essential. Our diamond certification services provide comprehensive, scientifically rigorous grading reports that document every aspect of your diamond's quality, ensuring you have the information needed to make informed decisions about buying, selling, or insuring your investment.
Our gemological laboratory is equipped with state-of-the-art instrumentation and staffed by GIA-certified gemologists with decades of experience in evaluating rare and exceptional diamonds.
Our diamond certification laboratory combines cutting-edge technology with the trained eye of expert gemologists to provide the most accurate and comprehensive diamond grading available. We use advanced spectrophotometers, precision measuring instruments, and specialized lighting to evaluate diamonds according to the universally recognized 4Cs: Cut, Color, Clarity, and Carat Weight.
Unlike many commercial grading laboratories, our focus is exclusively on rare and investment-grade diamonds, allowing us to dedicate the time and expertise needed for truly exceptional stones. Each diamond is examined by at least three gemologists, and our reports include detailed diagrams of inclusions, precise measurements, and high-resolution photography.
"In the world of rare diamonds, small differences in grading can mean hundreds of thousands of dollars in value," explains our chief gemologist, who trained at the Gemological Institute of America. "Our certification process is designed to provide the level of detail and accuracy that serious collectors and investors require."
Comprehensive evaluation of all 4Cs with detailed plotting of inclusions, fluorescence assessment, and precise measurements. Includes high-resolution photography and light performance analysis.
Specialized grading for rare fancy color diamonds, including precise hue, tone, and saturation analysis using standardized color grading systems and master comparison stones.
Advanced testing to determine geographic origin and detect any treatments or enhancements, using spectroscopic analysis and other scientific methods.
Market value assessment and investment potential analysis based on current market trends, rarity factors, and historical price performance of similar diamonds.
Understanding what makes your diamond exceptional
Evaluation of proportions, symmetry, and polish that determine how well a diamond interacts with light to create brilliance, fire, and scintillation.
Grading of colorlessness on the D-to-Z scale, with D representing completely colorless diamonds, the rarest and most valuable.
Assessment of internal characteristics (inclusions) and surface irregularities (blemishes) under 10x magnification, from Flawless to Included.
Precise measurement of weight, with one carat equal to 200 milligrams. Larger diamonds are exponentially rarer and more valuable.
Secure submission of your diamond to our laboratory with detailed information about any previous certifications or known characteristics.
Comprehensive examination by multiple gemologists using advanced instrumentation and standardized grading procedures.
Preparation of detailed certification report with measurements, diagrams, photographs, and grading results for all 4Cs.
Final quality control review and laser inscription of certification number on the diamond's girdle (if requested).
Contact our gemological laboratory to schedule certification of your rare diamond
Request Certification