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Diamond Certification Guide

Proof of What Matters Most

A diamond's certificate is its passport — verifying its authenticity, quality, and value. At The Real Gem, every diamond we sell is independently certified, giving you total peace of mind when investing in fine jewellery.

Whether you're buying a diamond ring, a pair of earrings, or a bespoke piece, certification guarantees you're getting exactly what you paid for.

What Is a Diamond Certificate?

A diamond certificate, also called a grading report, is a document issued by an independent gemological laboratory. It provides a professional analysis of the diamond's key characteristics:

  • Carat weight

  • Colour grade

  • Clarity grade

  • Cut grade (for round diamonds)

  • Measurements and proportions

  • Fluorescence

  • Polish & symmetry

Each certificate includes a unique report number and often a diagram showing the diamond’s inclusions and facets.

Why Certification Matters

  • Authenticity: Confirms the stone is a natural diamond

  • Transparency: Gives you a full breakdown of quality factors

  • Value Protection: Essential for insurance and resale

  • Confidence: Assures you're buying from a reputable source

💡 The Real Gem Promise: We only sell natural, diamonds with full documentation.

Who Are the Top Certification Labs?

The two most trusted names in diamond certification are:

GIA (Gemological Institute of America)

  • Widely regarded as the industry gold standard

  • Known for the strictest grading criteria

  • Independent and non-profit

WGI (World Gemological Institute)

  • Globally recognised and widely used by top jewellers

  • Specialises in accurate, consumer-focused grading

  • Provides digital and physical certificates with each diamond

📄 Every Real Gem piece comes with a WGI certificate, verifying the quality of your stone.

What to Look For on a Certificate

  • Grading report number

  • Matching stone weight and measurements

  • Clarity, colour, and cut grades

  • Certification body (e.g. WGI, GIA)

  • Laser inscription (if applicable)

Always compare the certificate to your stone to ensure consistency.

Certified Peace of Mind

Whether you're buying from our ready-to-wear collections or designing a bespoke piece, we provide full certification with every diamond purchase. It’s our way of ensuring honesty, transparency, and true value in everything we offer.

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