Amboyna burl, the burl of Narra, more commonly known as Padauk is, I say with no trace of hyperbole, among the rarest and most sought-after woods in the world. In fact, if you look up "burl" in wikipedia, Amboyna is singled out for mention as a rare burl. Such a beautiful, complex wood pairs nicely with the the austere blackness of black ceramic. Each piece varies wildly, but the color in this listing is representative of what you will receive, and there will be sapwood attached (unless you request otherwise)

Second only to Tungsten Carbide, Black Ceramic is the most scratch resistant material used to make rings. It is jet black all the way through-- its color is not a coating. It is permanent and will not corrode. This is not the "ceramic" of a commemorative plate. It is a seriously advanced material principally used in the aerospace industry. Though lighter than tungsten, it still has excellent heft. It gives every impression of being a metal, including a satisfying clink when tapped. 

Comfort fit.

I highly recommend going to a jewelry counter to determine your size, even if you already know your size. "Do it yourself" ring sizing methods (string, etc.) should absolutely not be trusted. Be sure to be measured using the width you plan to order. 

NOTE ON WIDTH:

This design is available in 8mm or 6mm width only!

www.etsy.com/listing/215684906/black-ceramic-ring-with-uss-north

*http://www.volcanogallery.com/aboutkoa.htm

************************************ IMPORTANT INFO ****************************************

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****PLEASE PLEASE PLEASE BE 100% SURE OF YOUR SIZE BEFORE ORDERING *****
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Black Ceramic wood rings cannot be resized at all! Every ring is made to the exact size provided. An error in sizing will necessitate a completely new ring. Refunds and exchanges will not be possible.

Each ring is given multiple coats of a hybrid epoxy finish, which is completely water-proof and soap proof. This protective coating is sanded up to 12,000 grit for an unbelievable, glass-like finish.

All rings ship via USPS Priority (or Priority International) Small Flat Rate Box. If you are outside the US and Canada, your only shipping option is Global Express. Please read below for details. Insurance is mandatory for this ring, and included in the shipping charge. You pay what I pay for shipping, nothing more.

For customers outside the US:

Due to changes in USPS policy, international packages sent to countries other than Canada can no longer be tracked past the US border. Insurance claims are also not possible. Due to this change and for your protection, international customers outside of Canada will be required to pay for USPS Global Express shipping ($44.95), which in addition to guaranteeing arrival within 3-5 business days (excepting intervention from your country’s customs department), also can be tracked and insured. I wish I could offer a more economical solution, but cheaper options are too risky.

International customers are responsible for all fees associated with shipping to their respective countries. Orders that are shipped to countries outside of the United States may be subject to import taxes, customs duties and fees levied by the destination country. The recipient of an international shipment may be subject to such import taxes, customs duties and fees, which are levied once a shipment reaches your country. Additional charges for customs clearance must be borne by the recipient; I have no control over these charges and cannot predict what they may be. Customs policies vary widely from country to country; you should contact your local customs office for further information. When customs clearance procedures are required, it can cause delays beyond the original delivery estimates. It is against the law and I will not mark an item as a "gift" to avoid any fees.