Reina Crown IV | Laboratory Grown Diamonds

$858 ~~$1716~~ In stock

A piece for all stories; a pair for your personal duet. Our classic diamond Reina Crown Ring has been designed across four sizes to allow for the perfect, custom fit based on your engagement ring style.

Our Reina Crown Ring | Fit IV is a wide fitting crown and was designed with larger solitaire styles in mind, with a feature stone of up to approx. 8mm in diameter round or 8x6mm diameter oval. Also suited for broader trio styles with deeper side stones - for example, an oval trio ring with centre 1.5ct stone, or a round trio ring with centre stone up to 8mm in diameter.

Please use our NMJ Crown Fit Guide here to find the perfect NMJ engagement ring and crown pairings, or contact our team here to discuss the right crown fit for your personal engagement ring.

Customer Reviews (4.4 / 5 · 5 reviews)

Isabella ★★★★★ Sep 8, 2026

The sizing options made it easy to match my engagement ring perfectly, and the lab diamonds catch the light beautifully from every angle. I've worn it daily for two weeks now and it still feels just as special as the first day I put it on.

David ★★★★★ Sep 7, 2026

I was nervous about ordering a ring to stack with my engagement ring sight unseen, but the four size options made it easy to find the exact fit that sits flush. The diamonds catch the light beautifully and it feels substantial without being heavy.

Claire B. ★★★★★ Aug 23, 2026

The four sizes made it effortless to find the perfect fit for my cushion-cut engagement ring, and the diamonds catch the light beautifully from every angle. I've worn it daily for a month and it still looks as brilliant as the day it arrived, no scratches or dulling at all.