NOVICA Hand Blown Clear Blue Recycled Glass Tumbler Glasses,10 oz 'Cobalt Rings' (set of 6) Size: 3.9" H x 3.2" Diam. Authentic: an original NOVICA fair trade product in association with National Geographic. Certified: comes with an official NOVICA Story Card certifying quality & authenticity. Exceptional Artisan Quality by Javier and Efren Product Info: Blown glass