1.21ct Radiant D SI1 Lab-Grown Diamond

The diamond is absolutely colorless — the highest color grade and rarest in lab-grown diamonds. Its clarity of SI1 means it is slightly included — inclusions visible under 10× but typically eye-clean. Measuring 7.40 - 5.30 * 3.57 mm, this stone has been precision cut to maximize the return of light through the table.

Chemical Vapour Deposition (CVD) — diamonds are grown layer by layer from a carbon-rich gas in a vacuum chamber. Lab-grown diamonds are real diamonds — chemically, physically and optically identical to mined diamonds, with the same fire, brilliance and 10/10 Mohs hardness. They are an ethical, sustainable and accessible choice, offering exceptional value without compromising on quality.

This diamond ships with its original IGI certificate (#LG786693953). You can verify the report at the link below.

• One certified lab-grown diamond — exactly the stone shown in the certificate
• Original IGI laboratory grading report
• Premium presentation box
• Free insured worldwide shipping
• Lifetime authenticity guarantee

Clean with a soft brush, warm water and a drop of mild dish soap. Pat dry with a lint-free cloth. Store separately from other jewellery to avoid scratches. Avoid abrasive cleaners. Ultrasonic and steam cleaning are generally safe for colorless lab-grown diamonds but should be avoided for fancy color stones to preserve their hue.

View the IGI certificate ↗

Free insured shipping worldwide. Orders typically ship within 1–2 business days; delivery times depend on destination. We offer a 30-day return policy on all unworn diamonds in original packaging with the certificate.