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 (5.0 / 5 · 5 reviews)

Harper ★★★★★ Sep 8, 2026

The sizing system really lets you match the band to your engagement ring's profile, and mine sits flush with no awkward gap. The diamonds catch the light beautifully even in dim restaurant lighting, which is exactly the sparkle I was hoping for.

George E. ★★★★★ Sep 7, 2026

The four size options made it so easy to match the ring to my own engagement band — it sits flush without any awkward gaps. Honestly, the lab-grown diamond catches the light beautifully, and I've gotten compliments every single day since I started wearing it.

Ava V. ★★★★★ Sep 1, 2026

Wearing this with my solitaire engagement ring feels like the set was designed together—the four sizing options meant I could pick the exact fit that sits flush without any wobble. The lab-grown diamonds catch the light beautifully, and I've gotten compliments every single day since I put it on.