Collectible and Rare set! They are part of the "Mine" series, designed by the renowned Swedish glass artist Ulrica Hydman-Vallien. Each piece in the collection is handcrafted and unique, featuring characteristic free-flowing color patterns and swirling veins of color against a clear background. The design includes subtle ribbing and a polished rim, making it suitable for both decorative purposes and functional use as a serving bowl. The "Mine" collection is popular and includes various items such as vases, tumblers, and dishes in different colors. Stamped snake swallowing tail Such a stunning piece 😍 The series was a huge success upon its launch in 2002. The tumbler has a capacity of around 10 ounces (30cl) and a height of approximately 4.5 inches.