Excellence in Analytics
Scientific Instrumentation & Advanced Technology
Our laboratory is equipped with world-class analytical tools to ensure the highest standards of precision in gemstone research and certification.
PRELIMINARY ANALYSIS
Standard Gemological Tools
The foundational pillar of our laboratory. These precision instruments allow
for the essential initial assessment of every specimen that enters PGGL.
Gemological Microscope
Purpose: Examination of inclusions, treatments, clarity characteristics, natural vs synthetic identification, and origin indications.
- Inclusion Mapping
- Origin Identification
- Clarity Grading
Refractometer
Measures refractive index (RI) and birefringence, which are among the most important properties for gemstone identification.
Polariscope
Determines optical character, singly or doubly refractive nature, strain patterns, and optic sign.
Spectroscope
Studies absorption spectra and helps identify gemstones and coloring elements.
Dichroscope
Detects pleochroism and assists in identifying colored gemstones.
Chelsea Filter
Purpose: Used as a supporting test for emeralds and certain colored gemstones.
UV Lamp (Long Wave & Short Wave)
Detects fluorescence and assists in gemstone identification and treatment detection.
- Detect Gemstone Fluorescence
- Assist in Gemstone Identification
- Detect Gemstone Treatments
- Identify Inclusions and Internal Features
Specific Gravity (Hydrostatic Balance)
Measures specific gravity (SG), an important physical property for gem identification.
- Gemstone Identification
- Density Measurement
- Authenticity Verification
- Material Classification
10x Triplet Loupe
Initial examination of inclusions, polish, symmetry, and surface features.
ADVANCED SPECTROSCOPY
Molecular Fingerprinting
Our advanced analytical wing utilizes quantum-level physics to determine chemical compositions and detect treatments invisible to traditional gemological tools.
FTIR Spectrometer
Detection of gemstone treatments, diamond type classification, and identification of fillers, oils, and polymers.
Raman Spectrometer
Advanced identification of gemstones and mineral inclusions.
UV-Vis-NIR Spectrometer
Analysis of trace elements, color-causing agents, and treatment detection.
Photoluminescence (PL) Spectrometer
Advanced diamond and colored stone analysis.
EDXRF Spectrometer
Determines chemical composition and trace elements.
EDXRF Spectrometer
Energy Dispersive X-Ray Fluorescence determines precise chemical composition and detects critical trace elements for origin verification.
Our Scientific Protocol
Standard Initial Intake
Every stone undergoes mandatory primary testing with our core gemological suite to establish its basic identity and properties.
Advanced Spectroscopy
If ambiguities remain, the specimen is moved to the molecular lab for detailed spectral analysis and chemical fingerprinting.
Peer Verification
Data is cross-referenced with our internal database and global standards before being certified by at least two senior gemologists.
Uncompromising Accuracy.
Trust the equipment, rely on the experts. Experience the gold standard in gemological certification.
- Laboratory Standards
- Education
- Scientific Research
- Global Compliance
- Contact
© 2026 PGGL Precious Gemological Laboratory. All Rights Reserved.
- Privacy Policy
- Terms of Service