Your ZiRO ring is made from the mineral Zircon (ZrSi04), which is found is S-type giant stars and the sun. How cool is that? 
When exposed to extreme heat Zirconium forms a black oxidised coasting which feels similar to ceramic in texture. 
The black coating is extremely strong and will never fade. 
And as if that weren't enough, Zirconium is used in nuclear reactors. Which is about as manly as it's possible to get. 
Your black ZiRO rins is comfortable, hypoallergenic and is available in a wide range of unique and classic styles. 
As you'd expect, all ZiRO rings come with a lifetime warranty. 
Our ZIRO range is custom made to order, Please contact us for a quote on your chosen style WITH FINGER SIZE.