2 beautiful, rare, vintage, handmade, iridescent blue/turquoise art glass tumblers by artist John Cook featuring a koi fish design. The glass is hand blown and signed by the artist in 1998. The glasses each measure 5.75” in height and 3” in diameter. They are in excellent condition with no chips or cracks. I don’t think they were ever used. The glasses have a carnival glass color changing effect. They are stunning and would make a statement on any table. Note: I have additional listings of the same tumbler in other colors.