TOP 30 Gemstone seller in West Chicago, Illinois

Costello Jewelry Company is a premier jewelry store located at 33 West Jefferson Avenue in Naperville, Illinois. Our passion for exquisite jewelry and dedication to ethical sourcing sets us apart as a trusted destination for all your jewelry needs. With over 35 years of experience, our expert jewelers offer impeccable craftsmanship and unbeatable selection at our Naperville and Glen Ellyn locations. At Costello Jewelry Company, we are committed to providing top-notch service and ensuring customer satisfaction. Our in-house shop offers a range of services, including battery replacement, watch bracelet polishing, ring restoration, and hand or machine engraving. We are proud to be 100% Kimberly Process Certified, guaranteeing the authenticity and ethical sourcing of our jewelry.

Sierra Gem Network is a renowned institution located at 28W520 High Lake Road in West Chicago, Illinois, United States. We specialize in the buying, selling, and trading of high-quality gemstones from around the world. Our experienced gemologists and knowledgeable staff are dedicated to providing exceptional service and expertise to our clients. Whether you are a collector, jeweler, or enthusiast, Sierra Gem Network is your one-stop destination for all things gem-related. Visit us today and discover the beauty and brilliance of our stunning gemstone collection.