Reina Crown I | Laboratory Grown Diamonds

$786.5 ~~$1573~~ 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 I was designed with a 1ct or under round solitaire in mind, with a maximum stone diameter of 6.5mm. 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 (4.8 / 5 · 5 reviews)

Sebastian W. ★★★★★ Sep 8, 2026

The four size options let me match it perfectly to my engagement ring's profile, and the lab-grown diamond catches the light beautifully without any of the guilt. I've worn it daily for two weeks now and it still feels as special as the day I put it on.

Stella Q. ★★★★★ Sep 1, 2026

The band hugs my engagement ring so seamlessly it feels like they were carved together, and the lab-grown diamond catches light with a fire that surprised me on our first dinner out. Tried it on with all four of my ring styles and the fit stayed flawless every time.

Ryan ★★★★★ Aug 24, 2026

I was nervous about getting the sizing right for my engagement ring, but having four options to choose from meant the fit felt truly personal. The diamond has this quiet, steady sparkle that catches the light without being flashy, which is exactly what I wanted for our everyday rings.