A Striking Stand Out. Iris has three defining features that make it one-of-a-kind. First are the tiny bubbles that are embraced by the glass, a trademark of mouth-blown craftsmanship. Second is the striking blue color that is infused in the glass and that will never lessen over time. Third is the unique shape of this collection, another testament to the handmade nature of Iris. This collection will bring a flair of individuality to your table.