PRICES MAY VARY. 8mm Silver, Black, Gunmetal and Rose Gold Tungsten Carbide Rings for Men Women Engagement Wedding Bands Koa Wood Genuine Green Opal Inlay Domed Polished Shiny Comfort Fit. Made of Genuine Tungsten Carbide. Scratch Resistant, Water Proof, Never Tarnish, Nice Weight, Cobalt Free, Hypoallergenic, Will Not Turn Your Finger Green. Ideal Fashion Rings Suit for All the Occasions Such as Wedding, Anniversary, Engagement, Party, Birthday, Valentine's, Thanksgiving and Christmas day…