Blue Glass Crab Ornament With Glitter And Sequins. Size: 4.33 inches. This glass blue crab ornament at Digs N Gifts Christmas Store is perfect for anyone who enjoys sea life or a relaxing day on the beach. This ornament features a light blue glass crab embellished with matching light blue mica. Beach Blue Crabs Crabs and Sea Life Themed Christmas Ornaments Decoration and Decor By Kurt Adler available and in-stock now online or In-store at the Digs N Gifts Christmas Store.