Lab-Grown Diamond: Meaning, Colour, Properties & Jewellery Guide.

The Complete Lab-Grown Diamond Buying Guide

Learn how lab-grown diamonds are created, graded and selected, including the 4Cs, certification, settings, care and answers to common questions.

How Lab-Grown Diamonds Are Created

CVD Method

Chemical Vapor Deposition uses a carbon-rich gas in a controlled chamber. Carbon atoms bond to a diamond seed, building layer by layer at high temperatures to create pure, high-quality diamonds.

HPHT Method

High Pressure High Temperature replicates natural diamond formation. Carbon is subjected to extreme pressure and heat, mimicking conditions deep within the Earth to crystallize into diamonds.

Identical Properties

Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds. They possess the same hardness, brilliance, and fire, making them indistinguishable without specialized equipment.

Understanding the 4Cs

Certification & Grading

Settings & Styles

Solitaire

Classic single-stone setting that maximizes diamond visibility and light performance. Timeless elegance that suits all diamond shapes and emphasizes the stone's natural beauty.

Halo

Centre stone surrounded by smaller diamonds, creating the illusion of a larger diamond. Adds brilliance and vintage-inspired glamour while protecting the centre stone.

Pavé

Small diamonds set closely together along the band, creating a continuous sparkle. Adds luxury and brilliance without overwhelming the centre stone.

Care & Maintenance

Common Questions

Are lab-grown diamonds real diamonds?

Yes, lab-grown diamonds are real diamonds with identical chemical composition, physical properties, and optical characteristics to mined diamonds. They are certified by the same gemological laboratories and are indistinguishable without specialized equipment.

How much can i save with lab-grown diamonds?

Lab-grown diamonds typically cost 30-40% less than equivalent mined diamonds. This allows you to choose a larger or higher-quality stone within your budget, or invest the savings in a more elaborate setting or other priorities.

Will lab-grown diamonds last forever?

Yes, lab-grown diamonds are just as durable as mined diamonds. They rank 10 on the Mohs hardness scale and will maintain their brilliance and structure indefinitely with proper care. They are truly forever stones.

Can jewellers tell the difference?

Not with the naked eye or standard gemological tools. Specialized laboratory equipment is required to detect the subtle growth patterns that distinguish lab-grown from mined diamonds. Both are certified and graded using identical standards.

Are lab-grown diamonds more ethical?

Lab-grown diamonds have a transparent supply chain and avoid the environmental and social concerns associated with some mining operations. They require significantly less land disruption and water usage, making them a responsible choice for conscious consumers.

What shapes are available?

Lab-grown diamonds are available in all traditional shapes including round brilliant, princess, cushion, emerald, oval, pear, marquise, radiant, and asscher. The same cutting techniques are used to maximize brilliance and beauty in each shape.