Glenn Spiro: The Art of a Jewel by Assouline unveils the brilliance of one of the world’s most exclusive private jewelers. Showcasing Spiro’s extraordinary creations — from rare gemstones to his iconic “Papillon” butterfly ring gifted by Jay-Z to Beyoncé — this book captures the innovation and mastery behind each couture piece. With photography that highlights both bold design and exquisite craftsmanship, readers are transported inside his appointment-only London atelier. A dazzling celebration of artistry and rarity, this volume cements Glenn Spiro’s place as a visionary in contemporary jewelry.