3.18 Carat Old Mine Cut Diamond Dea Engagement Ring


This GIA-certified 3.18-carat old mine brilliant cut diamond is slightly elongated and unique, with a color grade of S-T and a clarity grade of SI1. The stone is set within 4 faceted claw prongs in 18k yellow gold. The ring is currently a size 5.75 and can be resized.

  • GIA-certified 3.18-carat
  • Old mine brilliant cut diamond
  • Color grade S-T
  • Clarity grade of SI1
  • 4 faceted claw prongs
  • 18k yellow gold. 
  • size 5.75 (can be resized)
Complementary Shipping

We ship all domestic packages via UPS or FedEx next day or 2nd day air with an adult signature confirmation.

All packages are shipped fully insured for their purchased price. You will receive an shipping notification with tracking number when your order has shipped.


You have 7 days from receipt to return ready-to-ship items. US returns ship free; reach out to us to coordinate your return or exchange. We'll create a complimentary shipping label with insurance. Items returned without notification will be subject to a 10% fee. Responsibility for lost or stolen returns sent without notification lies with the sender.

*please note that items that have been resized or modified in any way are not returnable.


You can personalize this ring with a different stone, available in platinum, 18k yellow, white or rose gold. The creation of bespoke projects typically requires about 4 to 6 weeks.

If you love this diamond but are interested in a different KN setting, contact us to make a similar piece.

⟡ View diamond GIA-report

Why we love it

We love a big, chunky old mine cut diamond, and this one has a glowing warmth that draws the eye into the stone in a truly captivating way. It’s soft, rounded silhouette and large facets work together to create a distinct romantic look. We adore the way this softer shaped stone works with the organic curves of our Dea shank.

If you love this diamond but are interested in a different KN setting, contact us to use this stone in a custom project.