Titanium Celtic Rings, knots, Irish, heart, and cross symbols.. These designs bring a sense of calm and tranquility. The intricacy itself reflective of the intricacy of natural forms. The celtic symbols derive from the ancient Irish culture. We use aircraft grade titanium cut deep into the classic knots, hearts, crosses, or Irish symbols specified, then the color is added in black, blue, green, red, purple, or white. The blue color is an anodizing process. The black,green, purple, red, or white are a resin process. We do one last close inspection of your titanium celtic knot, heart, cross, Irish symbol rings.. Finally, they are polished and your they are ready for shipping. .Also, take a look at our Engagement, Mens, Colored, Blue, Black, Titanium Rings, Solid 18k gold, solid platinum, white diamonds "Excellent Cut", black diamonds "Excellent Cut", or sapphires.