This vintage Uranium Waffle Block Or Cross-Cross Hazel Atlas Salt Shaker from the 1930s is a unique and collectible piece that glows under black light. Made of green glass with a Vaseline production style and fused glass technique, this original salt or pepper shaker is a rare find for collectors of decorative cookware and serveware. The brand Hazel-Atlas is known for producing quality glassware, making this item a desirable addition to any vintage kitchen decor collection.