Prescreen Service

GemFolio Premium Prescreen Report.

Providing essential identification, origin determination (where applicable), and treatment disclosure with a rapid evaluation workflow suitable for collectors and dealers.

Rapid Evaluation for Your Stone.

Our GemFolio Premium Prescreen Report provides preliminary gemstone screening and essential identification. Using a systematic multi-instrument workflow, we determine the mineral species, detect any treatments or enhancements, and provide a rapid evaluation workflow suitable for collectors and dealers.

This report includes seamless digital record integration, ensuring every conclusion is backed by spectroscopic evidence and verified through our proprietary system.

Species Identification

Mineral species and variety classification

Treatment Disclosure

Treatment / enhancement disclosure

Origin Determination

Origin determination (where applicable)

Digital Integration

Digital verification + QR code and stone photograph

Gemstones We Test

Ruby Sapphire Emerald Spinel Tourmaline Garnet Alexandrite Jade Tanzanite + More

From Submission to Report.

1

Submit

Drop off or ship your stone to our lab

2

Register

Weigh, photograph, and assign unique ID

3

Analyse

Multi-instrument spectroscopic analysis

4

Review

Expert interpretation + ML cross-reference

5

Report

Generate certified digital/physical report

6

Deliver

Secure return with report & micro-tag

Analytical Arsenal.

Raman Spectroscopy

Molecular identification, inclusion analysis, and phase determination through laser-induced vibrational spectroscopy.

FTIR Spectrometer

Infrared absorption analysis for treatment detection — polymer impregnation, heat markers, and filler residues.

UV-Vis-NIR

Full-spectrum absorption mapping to determine colour cause, chromophore identification, and synthetic screening.

EDXRF Analyzer

Chemical composition and trace element profiling down to ppm precision for origin classification vectors.

Microscopy Suite

High-magnification inclusion study, growth structure analysis, and photodocumentation of internal features.

Photoluminescence

Time-resolved fluorescence for defect centre study and treatment-related optical signature detection.

What You Receive.

GemFolio Premium Prescreen Report

Providing essential identification, origin determination (where applicable), and treatment disclosure.

Digital Record Integration

Seamless digital verification with QR code access and stone photograph.

Digital Verification

Online report verification via our public check system — instant, permanent access.

Service Levels.

Service Level Duration Premium
Standard 5–7 business days
Priority 3–4 business days x2
Express 1–2 business days x3

Turnaround begins from the business day after sample registration. Complex origin cases may require additional time.

What a Report Looks Like.

Each report identifies the gemstone and any treatments, including its origin if we can definitively determine it.

View Interactive Sample Reports

Submit Your Gemstone.

Ready to get your gemstone prescreened? Contact us to begin the submission process or visit our Bangkok facility.