Light Performance
Upload an original GIA, IGI, or GCAL grading report for independent interpretation before you decide.
Diamond Intelligence · Private · No sales pressure
Upload the original grading report PDF.
Diamond Intelligence is most reliable when it reads the lab report itself.
Upload report PDF
Drop the original grading report PDF here
Round brilliant diamonds only.
The analysis evaluates the diamond itself — not the asking price.
For best results, use the original PDF from GIA, IGI, or GCAL 8X.
Desktop is often the easiest way to download the original report PDF.
Mobile works when the PDF is already saved in Files. If you only see ‘Save to Photos,’ use Concierge instead.
Only have a screenshot, image, or listing link? Begin the Conversation and we'll review it personally.
Diamond Intelligence is currently in beta and supports round brilliant diamonds only. Fancy shapes and additional report formats are still being added.
Evaluating a fancy shape, antique cut, or unusual report format? Submit your project through Concierge.
- Private by Default
- Independent Analysis
- Graduate Gemologist Reviewed
- No Sales Pressure
Understand the Assessment
01How Diamond Intelligence WorksIndependent interpretation for original grading reports.
Diamond Intelligence is an independent interpretation layer for original diamond grading reports. You upload a PDF from a recognized laboratory, and the tool extracts the measurements, proportions, and performance signals the report contains—then translates them into practical context using Hourglass review standards.
02What Diamond Intelligence doesClearer judgment—not a listing search or price engine.
It is not a listing search, a price engine, or a sales funnel. The goal is clearer judgment: understanding what a report actually suggests about light behavior, craftsmanship, and overall quality before you commit to a stone.
03Reading GIA, IGI, and GCAL 8X reportsWhat laboratory measurements mean in practice.
Grading reports use a shared vocabulary—carat, color, clarity, cut—but the numbers behind those grades are not self-explanatory. Table size, depth, crown and pavilion angles, and optical balance all influence how a diamond actually performs in light. GIA, IGI, and GCAL 8X each present that data differently.
Diamond Intelligence is built to read those documents on their own terms: extracting what the laboratory measured and interpreting how those measurements may translate in real-world viewing. For background on each laboratory's approach, see our guides to GIA, IGI, and GCAL 8X certification—and how to read a diamond certificate for a walkthrough of what belongs on the page.
04Why the Report Is Only a Starting PointPaper grades narrow the field; the final choice is still yours.
A report is a starting point—not the final decision
Even an excellent certificate cannot fully describe how a diamond moves under different lighting, how inclusions behave at distance, or how the stone will feel in your setting. Paper grades are useful precisely because they narrow the field—but the final choice still depends on seeing the diamond, comparing alternatives, and weighing beauty against budget with calm judgment.
Diamond Intelligence is designed for that earlier stage: when you are evaluating a specific report and want a structured second opinion before scheduling a viewing or conversation. Pair it with the Diamond Size Studio when size on the hand is part of the question, and with our approach when you want to understand how Hourglass evaluates stones in person.
05Graduate Gemologist review and conservative standardsPerformance-oriented, honest about what reports cannot prove.
Hourglass Diamonds is led by a Graduate Gemologist with deep trade experience. Diamond Intelligence reflects that perspective: conservative where the data is ambiguous, performance-oriented where proportions matter, and honest about what a report can and cannot prove.
The tool does not inflate grades or smooth over weak craftsmanship signals. When a report raises questions—borderline proportions, unclear optical balance, or clarity that deserves in-person verification—the interpretation says so plainly. That is the same standard applied in private client work at The House. If you would rather talk through a specific stone, you can begin the conversation without pressure.
06Common QuestionsQuick answers before you upload.
- What is Diamond Intelligence?
- Diamond Intelligence is an independent report interpretation tool from Hourglass Diamonds. Upload an original grading report PDF and review how the stone's proportions, light performance, and craftsmanship read against trained gemological standards—not a sales script.
- Which grading reports does Diamond Intelligence accept?
- Diamond Intelligence accepts original PDF grading reports from GIA, IGI, and GCAL 8X. The tool extracts measurements and performance data from the document you provide and interprets them through Hourglass review standards.
- How does Diamond Intelligence help read a GIA, IGI, or GCAL report?
- A certificate summarizes grades and measurements, but the practical meaning of those numbers is not always obvious. Diamond Intelligence translates proportions, optical balance, and performance indicators into clearer context so you can understand what the report suggests before you buy.
- How is this different from GIA Report Check?
- GIA Report Check confirms that a report number matches GIA's database. Diamond Intelligence goes further by interpreting proportions, light behavior, and craftsmanship signals in practical terms—without replacing the laboratory's official grades.
- Is a grading report enough to make a final buying decision?
- A report is a strong starting point, not a substitute for seeing the diamond in person. Beauty, light performance in real environments, and how the stone works in your setting still matter. Diamond Intelligence is designed to sharpen judgment before that final viewing—not replace it.
Further reading
Diamond certification guides