Different lab-grown diamond shapes used for jewellery design

Technology

CVD & HPHT diamonds

Lab-grown diamonds are created through controlled technology that crystallizes carbon into diamond with the brilliance, durability, and optical performance required for fine jewellery.

  • HPHT: High Pressure High Temperature growth uses extreme pressure and heat to form diamond crystals.
  • CVD: Chemical Vapor Deposition grows diamond layer by layer from carbon-rich gas on a diamond seed.
  • Result: Both methods create genuine diamonds that can be cut, polished, graded, and certified for jewellery use.

Lab-Grown Essentials

What buyers should know first

Lab-grown diamonds are real diamonds. The difference is controlled origin, not beauty or chemistry.

Genuine Diamond Structure

Lab-grown diamonds are crystallized carbon with the brilliance, hardness, and fire expected from a diamond.

Controlled Origin

Production happens in a lab environment, reducing land disturbance and improving traceability for buyers.

Transparent Evaluation

Quality is still judged through the same practical buying lens: cut, color, clarity, carat, make, and certification.

The 4 Cs

Mastering diamond quality

Diamond value and suitability are shaped by cut, color, clarity, and carat weight together.

Cut

Cut controls light return, fire, brilliance, and face-up beauty. Excellent make is critical for premium stones.

Color

Color grades describe the absence of visible body color, commonly from D colorless to M faint tint.

Clarity

Clarity measures internal and external features, from Flawless to included grades.

Carat

Carat measures weight. Two stones of equal carat can differ in beauty based on cut and proportions.

The 4 Cs of diamond grading

Reports & Certification

How grading supports confident buying

For certified stones, grading reports help buyers compare diamonds using documented measurements, color, clarity, polish, symmetry, fluorescence, proportions, and lab-grown disclosure.

  • Identity: A report records the stone and grading details for trade documentation.
  • Quality: Buyers can compare stones consistently across the 4 Cs and make.
  • Confidence: Certification adds transparency for retailers, brands, and end customers.
IGI lab-grown diamond report reference

Lab-Grown Report

IGI diamond report reference

Diamond Report

Shapes

Choosing a diamond shape

Different shapes support different design language, from classic solitaire rings to modern jewellery collections.

Round

Maximum classic brilliance.

Oval

Elongated elegant spread.

Heart

Romantic statement shape.

Emerald

Clean step-cut geometry.

Cushion

Soft corners, strong fire.

Pear

Teardrop silhouette.

Radiant

Modern brilliant rectangle.

Princess

Sharp square brilliance.

Marquise

Long profile, larger look.

Asscher

Vintage step-cut symmetry.

Wholesale Buying

What to share with us

Clear specifications help our team respond quickly and accurately with suitable stock or manufacturing options.

Shape

Round, oval, cushion, emerald, pear, radiant, or custom mix.

Size

Melee, calibrated sizes, carat range, or single stone requirement.

Quality

Color, clarity, cut preference, make, and certification requirement.

Volume

Parcel quantity, recurring production need, timeline, and delivery priority.

Need Guidance?

Send your diamond requirement

Our team can help you choose the right shape, quality range, and certification path for your order.

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