Beautiful Hawaiian Koa Wood and Black Ceramic in 9mm Thickness with the Comfort Fit. Durable and Scratch ResistantCeramic is a high performance, heat and scratch resistant, hypoallergenic and lightweight material. It is not completely scratch proof. Ceramic rings appear to be fragile and delicate, they are stronger and more durable than metal rings, such as steel and platinum rings. According to the Mohs scale, which rates the hardness of materials on a scale of one to 10 with 10 as the hardest material, ceramic material rates a 9.Ceramic is however,very brittle and may shatter or break on impact against any hard surfaces if if it is dropped just right. They have a glossy finish and the color does not fade.

Beautiful Hawaiian Koa Wood and Black Ceramic in 9mm Thickness with the Comfort Fit. Durable and Scratch ResistantCeramic is a high performance, heat and scratch resistant, hypoallergenic and lightweight material. It is not completely scratch proof. Ceramic rings appear to be fragile and delicate, they are stronger and more durable than metal rings, such as steel and platinum rings. According to the Mohs scale, which rates the hardness of materials on a scale of one to 10 with 10 as the hardest material, ceramic material rates a 9.Ceramic is however,very brittle and may shatter or break on imp