Koa only grows in Hawaii, which is why it's on so many rings from people who got married there, honeymooned there, or grew up there. In these rings it sits as an inlay in tungsten, a warm golden to reddish brown, and the grain catches light differently as the ring turns.
Wear it as a single strip in black tungsten, a double inlay in brown or silver, alongside abalone shell in the Hawaiian ring, with a green lab-created opal, or wrapped with a guitar string. Most are 8mm, with 6mm and 4mm options. See every wood on wood inlay rings, or abalone shell rings for more of the ocean.
Koa grows only in Hawaii. It runs from golden to reddish brown, and its curly grain shifts in the light as the ring turns. In these rings it is sealed under a polished jewelry resin and set into comfort-fit tungsten carbide.
A single koa strip on black, a dual inlay on brown or silver, koa beside abalone shell in our Hawaiian ring, koa with green lab-created opal, or koa wrapped with a guitar string.
Can a koa ring get wet? Everyday hand washing is fine because the wood is sealed. The main thing to avoid is scraping the ring against metal or stone. See our ring care guide.
Sizing? Ring sizes sit close together (a half size is less than half a millimeter), so it is worth measuring properly with our sizing guide. If the fit still isn't right, size exchanges are free within 30 days, and every ring has a one-year warranty.
Shop related collections: Wood Inlay Rings | Abalone Shell Rings | Sequoia Redwood Rings | Brown Tungsten Rings