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The Great Diamond Debate III: Passion vs Tension – Lab-grown diamonds have disrupted traditional markets, sparking debates on value, transparency, and clear natural-synthetic differentiation to sustain consumer trust and industry health.

The Great Diamond Debate III: Passion vs Tension

Posted December 15, 2025

Seven years after the inaugural Great Diamond Debate, the diamond landscape is almost unrecognisable. Natural and laboratory-created stones now share a stage transformed by technology, shifting values, and new rules of engagement. In this edition, leading voices worldwide reveal how the story has evolved – and where it’s heading next!

THE GREAT DIAMOND DEBATE III

Table of Contents

The Big Picture
	What becomes of the broken-hearted? Publisher, Publisher of Jeweller
	Diamonds: A small piece of a large puzzle Samuel Ord, Editor of Jeweller
In-Depth
	Will diamonds shine forever? Eight steps to securing a brighter future Robert Bouquet, Independen Analyst
	Lab-created diamonds are in fashion Joshua Freedman, Senior Analyst, Rapaport
	The Mark: Natural diamonds need to be more easily identifiable Paul Zimnisky, Independent Diamond Industry Analyst, Paul Zimnisky Diamond Analytics
The Debate
	Natural diamonds: Clean your house first! Garry Holloway, Owner, Holloway Diamonds
	Diamonds & Ice: Nobody likes change Tom Chatham, Owner, Chatham Created Gems
	Consumers hold an enduring love for natural diamonds David Kellie, CEO, Natural Diamond Council
	Seismic shifts to shape jewellery retail for the next 40 years Marty Hurwitz, Executive Director, Grown Diamond Trade Organization
	Trust and transparency remain critical in an evolving diamond industry Sally Morrison, Natural Diamonds Market Lead (US), De Beers Group
	Consumers wisely opt for the superior product: Lab-created diamonds Martin Roscheisen, CEO, Diamond Foundry
	Natural Diamonds: Nature’s Mic Drop Feriel Zerouki, President, World Diamond Council
The Science
	Strictly speaking, about synthetics Dr Gaetano Cavalieri, President, World Jewellery Confederation (CIBJO)
	Natural or Synthetic Diamonds: Education is more important than ever Ian Dun, Federal President, Gemmological Association of Australia
	Beauty & Flaw: Nothing lasts forever Daniel Nyfeler, Managing Director, Gübelin Gem Lab.
	Diamonds from Earth and Lab: Facts, Opportunities, & Transparency Tehmasp Printer, CEO, International Gemological Institute
	Legacy of Clarity: GIA updates diamond reports to reflect market Gemological Institute of America (GIA)