---
title: "4mm Rounded Wedding Band in Gold or Platinum"
description: "A 4mm rounded ring men's wedding band in platinum or gold. Made to order in our New York flagship. Crafted under the same roof as our diamond settings."
canonical: "https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635"
last-updated: "2026-11-10"
---

# 4mm Rounded Ring

> A 4mm rounded ring men's wedding band in platinum or gold. Made to order in our New York flagship. Crafted under the same roof as our diamond settings.

A classic 4mm band with a softly rounded profile, designed for comfortable everyday wear.

## Details

| Attribute | Value |
| --- | --- |
| Design number | AD-635 |
| Category | Bridal · Wedding Bands · Metal Bands |
| Price | $800 – $1,400 |
| Total carat weight options | ctw |
| Metals | Platinum, 18k White Gold, 18k Yellow Gold, 14k Yellow Gold, 18k Rose Gold, 14k Rose Gold |
| Engraving | Available |
| Lead time | Made to order; ships in Varies by Size |
| Resizing | This style can be sized up or down one full size and should not be sized more than once. |
| Made in | New York City |

## More details

Setting Details:

Rounded profile with high polish finish, and comfort fit interior.

Approximately 4mm width and 1.6mm depth. Depth may vary based on ring size.

Quarter sizes are final sale.

Note: Plain metal bands offered by Ada are not custom cast and are available as off-the-shelf items for expediency and cost. As a result, this band may have very slight differences in color for yellow and rose gold from custom cast pieces. If you are interested in a custom cast band to accompany your engagement ring, please inquire.

Additional questions? Interested in a custom design? Our friendly Diamond Concierge are here to assist you.

## Options and prices

| Option | Price | Ships in |
| --- | --- | --- |
| [4mm Rounded Ring in Platinum](https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635?metal=platinum) | $1,400 | Varies by Size |
| [4mm Rounded Ring in 18k White Gold](https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635?metal=18k-white-gold) | $1,150 | Varies by Size |
| [4mm Rounded Ring in 18k Yellow Gold](https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635?metal=18k-yellow-gold) | $1,150 | Varies by Size |
| [4mm Rounded Ring in 18k Rose Gold](https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635?metal=18k-rose-gold) | $1,150 | Varies by Size |
| [4mm Rounded Ring in 14k Yellow Gold](https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635?metal=14k-yellow-gold) | $800 | Varies by Size |
| [4mm Rounded Ring in 14k Rose Gold](https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635?metal=14k-rose-gold) | $800 | Varies by Size |

## Shipping and returns

- Free shipping in the US; international shipping $75.
- 30-day returns by mail ($50 return label). Full terms: <https://www.adadiamonds.com/terms>

## Images

![4mm Rounded Ring featuring Diamonds](https://content.adadiamonds.com/image/upload/v1723576604/Diamonds_4mm-Rounded-Ring__Product-Number-635.png)

![4mm Rounded Ring featuring Hand Selected Diamonds](https://content.adadiamonds.com/image/upload/v1723576644/Lab-Diamonds-in-4mm-Rounded-Ring_Product-Number-635.png)

![4mm Rounded Ring featuring High Quality Man Made Diamonds](https://content.adadiamonds.com/image/upload/v1723576675/Lab-Diamonds-in-4mm-Rounded-Ring_Product-Number-635-L7TRNUHH.png)

![4mm Rounded Ring featuring Diamonds](https://content.adadiamonds.com/image/upload/v1723576701/Diamonds-in-4mm-Rounded-Ring_Product-Number-635.png)

![Diamonds 4mm Rounded Ring in](https://content.adadiamonds.com/image/upload/v1723576747/Diamonds-in-4mm-Rounded-Ring_Product-Number-635-JW2NCQXL.png)

![4mm Rounded Ring platinum featuring High Quality Lab Grown Diamonds (Main View)](https://content.adadiamonds.com/image/upload/v1723660756/platinum-in-4mm-Rounded-Ring_Main-View_Product-Number-635.jpg)

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Canonical URL: <https://www.adadiamonds.com/jewelry/four-mm-rounded-ring-635>