Cobalt Blue Enamel Dome Band Ring Size 6.5. Band Width: 3mm - 12mm. This item is pre-owned and in good condition.Please see the pictures above. Be sure to add NCJW/LA to your. So you do not miss any listings! The item "Vintage Textured 14k Yellow Gold Cobalt Blue Enamel Dome Band Ring Size 6.5" is in sale since Wednesday, September 8, 2021. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Retro, Vintage 1930s-1980s\Rings". The seller is "ncjwla" and is located in Los Angeles, California. This item can be shipped worldwide.