Diamond Defect Detection & Analysis
Quick Answer

Description
The "Diamond Defect Detection & Analysis" project represents a sophisticated intersection of reverse engineering, computer vision, and machine learning. Its core objective is to automate the identification and classification of microscopic defects within rough and polished diamonds, significantly augmenting-and in many cases replacing-the traditional, labor-intensive manual inspection processes. At the heart of this project lies the strategic reverse-engineering of proprietary gemstone scanning formats, specifically those generated by industry-standard equipment like Sarine Advisor.
In the highly lucrative and precision-driven diamond industry, even the most minuscule inclusion or flaw can drastically alter the valuation, structural integrity, and cutting strategy of a gemstone. Typically, manufacturers rely on closed-ecosystem software suites that restrict data access, forcing companies to pay exorbitant licensing fees for every tier of analysis or forcing them into manual workflows. By successfully dismantling these restrictions and parsing raw .adv and .glx files, this project unlocked the ability to build a custom, AI-driven computer vision pipeline. The resulting system overlays custom defect-detection algorithms directly onto the 3D models and image slices of the diamonds, delivering unparalleled accuracy and saving upwards of $50,000 annually in licensing and manual QA costs.
Problem Statement
The gemstone manufacturing lifecycle is fraught with inefficiencies, primarily stemming from the "black-box" nature of the hardware and software utilized in the industry. The specific challenges that this project addresses include:
- Vendor Lock-in and Exorbitant Costs: Hardware providers in the diamond industry (such as Sarine) provide the physical scanning machines but heavily encrypt the output data. To run defect analysis, manufacturers are forced to purchase expensive, proprietary software licenses.
- Opaque Data Formats: The output files (
.advand.glx) are complex, undocumented binary formats containing 3D volumetric data. Attempting to apply modern, open-source AI frameworks (like PyTorch or OpenCV) directly to this data is impossible without a parser. - Manual Dependency and Human Error: Human grading is inherently subjective. Fatigue, varying lighting conditions, and simple oversight can lead to missed inclusions or misclassification.
- Integration Bottlenecks: The inability to extract standard image frames or 3D meshes from the scanner logs meant that integrating historical data into a modern Machine Learning Ops (MLOps) pipeline was practically impossible.
Solution
Phase 1: Reverse Engineering with Ghidra
Using Ghidra, the team disassembled and decompiled the core DLLs responsible for file reading and 3D rendering. By analyzing the assembly code, the team mapped out the memory structures used to store vertex coordinates and inclusion boundary boxes. A Python wrapper using ctypes was built to dynamically load the native DLLs and decode the formats.
Phase 2: Data Extraction and Normalization
Once the binary barriers were bypassed, the system extracted GLX images (PNG/JPG) and volumetric data (OBJ/STL) to maintain high resolution and geospatial integrity without down-sampling pitfalls.
Phase 3: AI-Driven Defect Detection
The extracted 2D frames underwent pre-processing including adaptive thresholding and edge detection. A CNN (YOLO/Mask R-CNN variant) was trained on thousands of diamond slices to classify defects into industry-standard categories: pinpoints, clouds, feathers, and internal graining.
Conclusion
By refusing to accept the limitations of a closed ecosystem, the project successfully reverse-engineered undocumented file structures to unlock massive operational potential. The system netting $50,000+ in annual savings, eliminates human subjectivity, and catches micro-inclusions consistently 24/7.
Other Use Cases
- Medical Imaging: Reverse engineering proprietary MRI/CT scans for custom AI diagnostics.
- Automotive/Aerospace NDT: Extraction of sensor data from closed NDT equipment to train predictive maintenance models.
- Agriculture and Food Sorting: Using extracted multi-spectral data to detect crop diseases or mold.
- Seismic and Geological Oil Exploration: Applying custom deep-learning to locked binary formats to detect reservoirs.
- Legacy Systems Modernization: Safely extracting historical data from undocumented database files for migration to modern cloud environments.
Tech Stack
Developed Over
2024 - Present
Category
AI & Machine Learning
About the Author

Durvesh Baharwal
Full Stack AI Engineer & Data Scientist- Full Stack AI Engineer @ AI Alpha Tech
- Research Associate · ISRO / SAC
- NASA Space Apps Participant
- B.E. AI & Data Science, MET BKC Engineering
Durvesh builds production-grade AI systems ranging from satellite navigation algorithms to computer vision pipelines. He bridges deep research with practical deployment across industries.