Round Cut Eternity Lab Diamond Band Ring in Platinum - 3.8mm

Bold. Brilliant. Built to last. The men’s 3 Carat Round Cut Eternity Band wraps the finger in a full circle of icy round stones set in solid platinum. Designed with a wide, weighty feel, this ring gives classic eternity style a modern edge—unapologetically luxe and made for daily wear. 

All Lab Diamonds over 1 CT comes with a certificate of authenticity from a recognized gemological institute (IGI).

Discount codes are NOT valid on Platinum orders.

We cannot accept returns on made-to-order Platinum items.

Please allow up to 4-8 weeks for production time on ALL Platinum items.

Don't know your ring size?

Review our sizing chart below to find your best fit.

- Available in sizes: 5, 6, 7, 8, 9, 10, 11, 12, & 13

- Width: 3.8mm

- Total Carat Weight may vary by 3-5%

- Ring Weight (can vary +/- .5 grams by size)

                  - Sizes 5-13: 12 grams

- White Platinum with Lab VS diamonds

In order to accommodate holiday shopping, all orders placed from November 23rd 2025 until December 31st 2025 may be returned or exchanged until January 15th, 2026.

We gladly accept returns/exchanges for items in unworn brand-new condition, within the first 14 days after receipt of your order.