Overview

Lab-grown diamonds are diamonds. They share the same crystal structure, the same carbon chemistry, the same refractive index, hardness, and dispersion as natural diamonds. A gemologist cannot distinguish them with the naked eye or a standard loupe. The difference is not in what they are, but in how they came to exist — manufactured in a laboratory over weeks rather than formed in the Earth's mantle over billions of years.

This section covers the full landscape of lab-grown diamonds: the technology behind their creation, how they compare to natural stones, and the instruments and techniques the trade uses to tell them apart. Whether you are considering a lab-grown diamond for a purchase or simply want to understand the most significant development in the modern diamond market, the articles here provide the factual foundation.

What You'll Learn

The correct terminology for lab-grown diamonds and which terms are approved by the GIA and FTC
How HPHT and CVD growth methods work, including the conditions, equipment, and characteristics each produces
Why most CVD diamonds undergo post-growth HPHT treatment to improve colour
Whether lab-grown and natural diamonds look the same — and under what conditions they can be distinguished
How lab-grown diamond prices have changed, what drives those changes, and what this means for resale value
The disclosure requirements and grading report formats that apply to lab-grown stones
The screening workflow gemologists and jewellers use to separate natural from lab-grown diamonds
How UV fluorescence, cross-polarized light, microscopy, spectroscopy, and fluorescence imaging each contribute to identification
How mounted and melee-sized lab-grown diamonds are screened in a trade setting

Overview

What You'll Learn

Featured Articles

Laboratory-Grown Diamonds

Lab-Grown Overview

Natural vs Lab-Grown: What Differs

Screening & Identification