Loose Diamonds and Gemstones

Design your dream jewelry piece starting with the perfect stone. At The Diamondaire, we offer a curated selection of natural loose diamonds and gemstones—each chosen for exceptional quality, sparkle, and ethical sourcing. Whether you’re creating a custom engagement ring, anniversary gift, or heirloom keepsake, we’ll help you find the stone that tells your story.

Our inventory includes GIA, EGL, IGI, AGS-certified, loose diamonds and a variety of natural colored gemstones, including sapphires, rubies, emeralds, opals, tourmalines, and more. Each gem is available for in-store viewing or can be paired with one of our custom settings made right here in Saint Charles, Illinois.