Koa Ring With a Flat Design Crafted Out of Tungsten and Koa Wood

Find timeless style in a wedding, engagement, or special occasion ring that brings something different with unique materials. Naturalists will love this combination of 100% koa wood inlaid in pure tungsten carbide, cut with precision handmade craftsmanship. The flat profile lays comfortably close to the skin. Durable, lasting, classic beauty shines in the silver polish finish enclosing vibrant, light-catching koa in this 6mm ring. Interested in thicker koa? We have a bold 8mm version. Looking for a thinner band? The 4mm is an excellent choice. 

• 100% Genuine Koa Wood
• 100% Pure Tungsten Carbide
• Handcrafted
• Silver Polish Finish
• Flat Profile Comfort Fit
• 6mm Width (also in 4mm & 8mm)
• 100% Waterproof
• Scratch-Resistant 
• Hypoallergenic
• Ring Box Included

Free Shipping on All Orders

U.S. Domestic Shipping: 7 to 14 Days

International Shipping: 9 to 24 Days 

Canada orders usually take 8 to 15 days.

We use Untied States Postal Service for both domestic and international shipments. You will receive an email with a tracking number when your orders ships out. If you would like to purchase expedited shipping please contact us either before you place your order or right after. 

*All rings ship from Ann Arbor, MI.

90 Day Return

If you do not like it in the first 90 days, you can send it back for a full refund. Please send it back in the condition it was in. If you wish to return it outside the 90 day period we will work with you on it.

120 Day Free Ring Exchanges 

If the ring does not fit send it back and we will send you a second one for free. All we ask if for you to pay the shipping back. For U.S. customers it is usually under $3.00 if you use USPS First Class Mail.

Lifetime Warranty

All of our rings are covered by our Lifetime Warranty. 

In the rare event, your ring becomes damaged in any way we will replace it for free in the first year. The only thing you have to pay is the shipping to send it back. 

What happens after a year?

If your ring becomes damaged after 1 year we will replace it for a small deductible of only $45.00. You will receive a brand new ring. There is no limit on how many times you can use the warranty. 

If Your Ring Does Not Fit After A Year

If you ring needs resized after 120 days (This is rare). A deductible of $30.00 will allow you to exchange your ring for a new size. Most of our rings are made of alliterative metals which means they cannot be resized. This is why we will send you a new ring. 

What Our Warranty Does Not Cover.

Lost rings. Your ring is not covered if you lose the ring. 

We cannot always guarantee we will carry your ring you purchased in the future. If you ring is unviable in the future we will allow you to pick a new ring of equal similar value. 

Note: The 90-day return, 120-day ring exchange, and warranty does not start until after your wedding day. We just ask you send us some sort of receipt or invoice from your wedding day so we can confirm it. 

Unsure about your ring size?

Order a free ring sizer 

Ring Size Conversion Chart

All Northern Royal rings are US standard Sizes.