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Carbon Case (Hawaiian Koa)

Carbon Case (Hawaiian Koa)

Ships free within USA!

Regular price $389.00
Regular price $0.00 Sale price $389.00
Sale Unavailable
Shipping calculated at checkout.

Ring Sizing (Don't know your size?)

We've got you covered!

Our no charge calibrated sizing kit (available US only) will help you learn your perfect size! Available with ring purchase only.

Orders outside USA see alternate method below.


Don't rely on DIY/at-home sizing methods. They are inaccurate.


Alternate method 

Get sized locally: Visit at least 2-3 jewelers to get sized- it should be free. Why 2-3? Because some jewelers use inaccurate sizing methods or uncalibrated ring sizers that give an incorrect size. Going to 2-3 jewelers (that give you the same size) will help ensure you get the correct ring size.

Important note if getting sized locally-when selecting your size, keep in mind that wide (9mm+) rings tend to fit more snugly. Consider increasing the size you order a little (1/4 to 1/2 size) if you're getting a wider (9mm+) ring. Feel free to contactme withany questions.

How wide should my ring be?

Most people choose between 6-8mm wide

3-4mm - Very narrow

This narrow is a more feminine look.


5mm - Slim

Rings in this width are less common for men's rings, though some prefer a narrower ring.


6mm - Classic width

6mm is a very traditional men's band width. If you're new to wearing rings, or like a more classic style, this is probably for you.


8mm - Modern width

8mm is a modern/contemporary width that is gaining popularity. A little wider than traditional wedding bands, it has more presence than 6mm, but is still comfortable for daily wear.


9mm+ Very wide

Rings this wide are uncommon and make a statement. If you're looking at something this wide, you probably already know what you want. If you're not used to wearing jewelry, a ring this wide might bother you.

Remember Very wide rings tend to fit more snugly. You might need to adjust the size you order if you're getting a wider (9mm+) ring.

The Carbon Case Features a luxury grade side cut carbon fiber outside with a gorgeous Hawaiian Koa wood liner. It is totally waterproof, insanely lightweight, and 100% awesome!

Important note on sizing- when selecting your size, keep in mind that wider rings tend to fit more snugly. Consider increasing the size you order a little (1/4 to 1/2 size) for wider (9mm+) rings. Feel free to contact me with any questions.

Free shipping in the USA!

To see my current delivery times tap HERE

Every Richter Scale ring is covered by our 100% Guarantee

About This Ring

Resizing- This ring can be resized up or down as much as 1 full US size
Materials- Top quality carbon fiber and Hawaiian Koa wood
Finish- Matte outside, polished inside
Care Instructions- Clean with mild soap and water as needed and dry.
Fit- Comfort fit
Width - this ring is pictured in 9.5mm. available in either 6.5mm, 8mm 9.5mm or 12.5mm width.
How will it feel on my finger?
This ring is very smooth and comfortable on your finger and very lightweight.

Ordering & Delivery

What size am I? Click here for sizing information.

Lead Time- Ever Richter Scale ring is custom made to order, I'm not selling mass produced rings from China, but rather all of my rings are handcrafted one-at-a-time in my small US based shop. As such, my rings don't normally ship out next day. I do pride myself on fast delivery time, normally 2 weeks or less. Not months like some. 

Returns- I accept returns but keep in mind each ring is custom made. Please see my detailed policies here.

How Long Will My Order Take?

How long will it take to receive my order?

Currently, orders are taking 3-4 weeks to craft, plus transit time.

If you need your ring sooner, please contact me and I'll do my best to make it happen!

Each Richter Scale ring is handcrafted to order, one at a time in my Florida based workshop. I don't resell mass-produced rings from China. That means that my rings don't ship at Amazon speed. Quality takes time.

Shipping & Returns

Shipping- We ship worldwide! Taxes & import fees may be collected by your country on delivery.

Returns- I accept returns but keep in mind each ring is custom made to order, so conditions apply. Please see my detailed policies here.

100% Lifetime Guarantee

If you EVER have any problems with your ring as a result of flaws or defects in workmanship during the life of your ring I will gladly repair or replace the product at no charge to you! I stand behind my work 100%

Excessive wear or damage from abuse/neglect is not covered.

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Customer Reviews

Based on 2 reviews
Maddi Valentine

my husband has been following Richterscalerings for years and when we received his ring it blew both our minds. The skill that goes into these rings are amazing. Super light weight yet detailed and sturdy. We could not be any happier!

Massimo Narini
Beautiful ring!

I ordered this ring after looking at other ring makers that made carbon/wooden rings and liking a few things better about Richter Scale rings. I liked the lower profile of this ring compared to others (~2.5 mm vs 3.5mm), the wood grain of the Koa wood, the sealing of the wood to protect it from fading and wear and the general ease with which I was able to order. It fit true to size as far as I can tell (make sure to try on the width you are looking for as well. Wider rings fit snugger). The ring was shipped in the amount of time they told me when I ordered it and I think one of the most unique parts was getting "in process" pictures through Instagram of MY ring being made. I don't know many people that can say that! Extremely happy!