N° 01. Learn
The Hub
Considered guides on lab-grown diamonds, certification, and the cuts we work with.
What is a Lab-Grown Diamond?
Learn what sets lab-grown diamonds apart - chemically, physically, and optically identical to mined stones.
How They're Made
An overview of the HPHT and CVD processes used to grow certified diamonds in a laboratory environment.
The 4 Cs of Diamonds
Cut, colour, clarity, and carat - the four grading dimensions that determine a diamond's character and price.
Shape Guide
Round, oval, emerald, pear and beyond. Understand how each shape affects brilliance, size appearance, and style.
Quality Standards
Every CRTD diamond meets a VS1 minimum clarity threshold and carries independent IGI or GIA certification.
How We Source
A sourced-to-order model means access to thousands of certified stones without the overhead of pre-purchased stock.
Cut Guide
Why cut quality matters more than any other grade - and how to read a grading report's cut assessment.
Colour Guide
The D-to-Z colour scale explained, with guidance on which grades offer the best balance of quality and value.
Clarity Guide
FL to I3 - understanding inclusions, how they affect a stone, and where CRTD draws its VS1 minimum line.
Carat Guide
Carat weight versus face-up size, and why two diamonds of the same carat can look very different in practice.
Glossary
Definitions for every term you'll encounter - from brilliance and scintillation to table percentage and pavilion depth.
Frequently Asked Questions
Answers to the most common questions about lab-grown diamonds, our sourcing process, and how to buy with confidence.