Report Formats

From a compact bi-fold to a hardcover prestige folder β€” every ALGT report is crafted to match the importance of the gemstone it documents.

Each ALGT report is the product of meticulous laboratory work, presented in a format that reflects the value of your gemstone. Choose the level of presentation that best suits your purpose β€” from quick verification to bespoke documentation for auction-grade pieces.

Medium
Medium sample
01Bi-fold Report

Medium

Format: 21 Γ— 14.7 cm

Essential identification and grading in a compact bi-fold format. Ideal for standard gemstones submitted by the trade.

Includes

  • Bi-fold Report
  • Full Identification
  • Treatment Analysis
  • Origin Determination
  • Photo of Item
Large
Large sample
02Tri-fold A4 Report

Large

Format: 29.5 Γ— 21 cm

A tri-fold A4 report with extended grading characteristics and spectral data β€” the industry-standard format for high-value colored gemstones and jewelry sets.

Includes

  • Tri-fold Report
  • Full Identification
  • Treatment Analysis
  • Origin Determination
  • Detailed Photo
  • Two Spectrum Data Charts
Luxury
03Hardcover Two-fold Folder

Luxury

Format: 36 Γ— 27 cm

Encased in a lush two-fold brown hardcover folder, the Luxury Report combines a classic large report with an additional information sheet tailored to your gemstone or jewelry set.

Includes

  • Full Identification
  • Treatment Analysis
  • Origin Determination
  • Detailed Photo
  • Two Spectrum Data Charts
  • Additional Information Sheet
Most Premium
Premium
04Hardcover Prestige Booklet

Premium

Format: 60 Γ— 27 cm

The ultimate certification for exceptional gemstones and jewelry. A 4–5 page document presented in an elegant blue hardcover β€” designed for those who appreciate quality, detail, and elegance.

Includes

  • Elegant Blue Hardcover (4–5 pages)
  • Stunning High-Resolution Photography
  • Detailed Inclusion Imagery
  • Insightful Description of the Item
  • Origin Introduction
  • Bespoke for High-Value Pieces

Not sure which report fits your gemstone?

Our gemologists are happy to advise you on the most suitable report format based on your stone, intended use, and audience.

ALGT

Independent gemological laboratory providing trusted certification from the heart of Antwerp's diamond district since 2019.

Contact

πŸ‡§πŸ‡ͺ Antwerp
Hoveniersstraat 30, 2018 Antwerp
info@algtlabs.com
+32 3 233 25 08
πŸ‡¨πŸ‡³ Shanghai
Room 1201, Ocean Building, 550 East Yan'an Road, Huangpu District, Shanghai
labshanghai@algtlabs.com
(021) 60704858
WeChat: ALGTSHANGHAI

Β© 2026 ALGT β€” Antwerp Laboratory for Gemstone Testing. All rights reserved.