For more than three decades, the Antwerp Gemological Laboratory has issued certificates that gem buyers, dealers, jewelers, and collectors rely on for the most important transactions of their careers. Today we expand that work beyond the lab bench: this blog will publish authoritative articles on gemstone identification, certification standards, treatment detection, and the global gem trade.
What we will cover
Our writers — practicing gemologists across three continents — will focus on the questions buyers actually ask: how do I know a ruby is from Mogok?, can I trust this lab report?, what does heat treatment really mean for value? Expect rigor, not marketing.
Topics on the calendar
- Ceylon sapphire origin determination — what spectroscopy reveals
- Reading a gemological certificate field by field
- Burmese vs Mozambican ruby: chemistry, color, and price
- Treatment detection in emerald: oil, resin, and what is acceptable
- The 4Cs of diamond grading, demystified
- Lab-grown diamond identification methods in 2025
Why we are publishing
Gemstone certification is a high-trust business. Buyers spending five, six, or seven figures on a stone deserve to know what is in their report — and how the lab reached its conclusions. By publishing openly, we hope to raise standards across the trade.
A certificate is only as valuable as the buyer's understanding of what it says.
If you have a gemstone you would like our team to examine, get in touch with the nearest AGL laboratory. New articles publish weekly. Bookmark this page or follow us on social media for updates.
