It is usually a very dark blue color but depending on the compounds of cobalt that are used cobalt blue can vary from turquoise blue to a more violet color and of course lighter blue variations. They are … We've sent you an email to confirm your subscription. In order to give you the best experience, we use cookies and similar technologies for performance, analytics, personalization, advertising, and to help our site function. Cookies and similar technologies are used to improve your experience, to do things like: Without these technologies, things like personalized recommendations, your account preferences, or localisation may not work correctly. You’ll see ad results based on factors like relevancy, and the amount sellers pay per click. These are Colorex, made in Brazil. There is a range of cobalt blue glass vases for sale on 1stDibs. Carnival Glass. Antiques-Brocante. ANTIQUE COBALT BLUE GLASS WINE DECANTER ENAMEL GOLD Sterling Silver Stopper 19C. Back then, uranium was seen as just one more mineral to color clear silicon dioxide, the main constituent in the sand glass is made from. Crystal Glassware. €14.55, €19.40 $25. View It on eBay. Vintage Cobalt Blue Vase, Cobalt Blue Glass Collector Vase, Cobalt Blue Flower Vase, Cobalt Glass Centerpiece Vase, Cobalt Blue Home Decor MidThePinesVintage. FREE shipping, Sale Price €14.55 or Best Offer. Royal Palm Antiques. C $521.16. 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