Reina Crown III | Laboratory Grown Diamonds

$929.5 ~~$1859~~ 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 III was designed with trio style rings in mind. It is best suited to trio styles with a narrow spread and steep gradient. For example, a round trio ring with round side stones and a centre stone of up to 6.5mm in diameter, or an oval trio ring with round side stones and a centre stone of up to 8x6mm 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 (4.6 / 5 · 5 reviews)

Robert ★★★★★ Sep 7, 2026

The sizing system actually worked flawlessly—my ring sits snug against my engagement band without any gap or wobble. I’ve worn it daily for two weeks now and the diamonds catch the light beautifully, even in low office lighting.

George R. ★★★★★ Sep 1, 2026

The four size choices gave me the perfect fit against my engagement ring — it sits flush with no gap, which my old band never did. The lab diamonds catch the light beautifully, and it feels sturdy enough for daily wear. Exactly the classic look I wanted for our duet.

Robert Y. ★★★★★ Aug 24, 2026

The four sizing options meant I could match my engagement ring exactly, and the lab-grown diamonds have that crisp, brilliant sparkle without the guilt. It sits flush against my solitaire, and honestly, it feels like it was made for our story.