"Diamonds, Love and Compatibility: So You Think You've Got a Gem SIGNED by Spero" is a vintage hardcover book published in 1977 by Exposition-Phonix Press, Incorporated. The book, written by Saul A. Spero, explores the relationship between diamonds, love, and compatibility. It is signed by the author, Saul A. Spero, and includes illustrations. The book is a first edition and features a dust jacket, making it a unique and collectible item for those interested in nature, rocks, and minerals.