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Business Details
50+ Years
experience
Custom Diamond Engagement Rings & Jewelry in Chicago
Windy City Diamonds has been a family-owned and -operated business since 1929, serving Chicago with four generations of expertise in diamonds and fine jewelry. Our legacy is built on honesty, integrity, and a commitment to providing the finest customer service in the industry. We specialize in custom-designed engagement rings and wedding bands, offering one-on-one consultations to ensure each piece reflects the client's unique style. With one of the largest selections of GIA-certified diamonds in the Chicago area, our team of professional designers, diamond consultants, and gemologists guides customers through every step of the jewelry creation process. We pride ourselves on using modern techniques like laser welding and CAD design while maintaining traditional craftsmanship.

Our services extend beyond sales to include jewelry repair, appraisals, engraving, and insurance, ensuring comprehensive care for every piece. We guarantee all diamonds are conflict-free through adherence to the Kimberley Process, ensuring ethical sourcing. Our lifetime upgrade policy allows clients to apply the full purchase price of certified diamonds toward future upgrades. With decades of experience and a focus on personalized service, we remain dedicated to helping customers find or create jewelry that holds lasting sentimental value.
Services
Custom Engagement Rings Jewelry Repair Diamond Certification Jewelry Appraisal Gold & Diamond Buying Laser Repairs Pearl Restringing Professional Jewelry Cleaning Jewelry Engraving Jewelry Insurance
Details
  • Year established: 1929
Highlights and features
  • Four generations of family expertise in diamond and jewelry craftsmanship.
  • We offer GIA-certified diamonds with a lifetime upgrade guarantee.
  • Custom designs tailored to individual style with CAD and laser technology.
  • Comprehensive services including repairs, appraisals, and conflict-free sourcing.
  • Ethical commitment to the Kimberley Process for 100% conflict-free diamonds.
Associations and certifications
  • Gemological Institute of America (GIA)
  • Kimberley Process
What people say
Exceptional service Quality craftsmanship Knowledgeable staff Unique designs Lifetime upgrade policy
Services
Custom Engagement Rings
We create bespoke engagement rings tailored to individual preferences using CAD technology and traditional craftsmanship. Our designers collaborate one-on-one with clients to transform ideas into unique, heirloom-quality pieces. Each ring is crafted with ethically sourced GIA-certified diamonds and precious metals, ensuring lasting beauty and sentimental value.
Jewelry Repair
Our expert jewelers handle repairs for broken clasps, damaged prongs, and other issues using advanced techniques like laser welding. We provide free estimates and prioritize preserving the integrity of your jewelry. Services include pearl restringing and restoration of heirloom pieces to their original condition.
Diamond Certification
We offer GIA certification for diamonds, ensuring authenticity and quality. This service includes detailed grading reports on cut, clarity, color, and carat weight. Certified diamonds come with a lifetime upgrade policy, allowing clients to apply their purchase value toward future upgrades.
Jewelry Appraisal
Professional appraisals are conducted to determine the value of jewelry for insurance or resale purposes. Our certified gemologists assess gemstones, metals, and craftsmanship, providing documented evaluations that meet industry standards for accuracy and reliability.
Gold & Diamond Buying
We purchase gold and diamonds at competitive market rates, offering fair valuations based on current precious metal prices and gemstone quality. Our transparent process includes on-site evaluations and immediate payment, ensuring a hassle-free experience for sellers.
People
Garry Zimmerman
GIA Diamond Consultant, Jewelry Designer
Fourth-generation expert with deep knowledge of diamond grading and custom design, ensuring clients receive ethically sourced, high-quality pieces tailored to their preferences.
Komal Dagaria
Jewelry Designer, Diamond Sales Consultant
Combines creative design skills with diamond expertise to help clients visualize and create personalized jewelry that reflects their unique style and story.
Lara Kunz
Diamond Consultant, Custom Designer, Graduate Gemologist
Specializes in translating client visions into custom jewelry, leveraging gemological expertise to select diamonds and materials that meet exacting standards.
Carlos Aquilar
Master Jeweler, Repairer
Skilled in intricate repairs and restorations, ensuring damaged jewelry is meticulously restored to its original condition using advanced techniques.
Denisse Romo
Senior CAD Designer
Utilizes cutting-edge technology to create precise digital models for custom jewelry, bridging innovation with traditional craftsmanship for flawless execution.
Questions
What is your refund policy on diamonds?
GIA-certified diamonds are 100% refundable within 30 days if returned in original condition with lab reports. After 30 days, 50% refunds apply.
Do you offer a lifetime upgrade policy?
Yes, we allow full credit for original purchase prices of GIA-certified diamonds toward future upgrades with proper documentation.
How long does a custom ring take?
Custom rings typically take 2-3 weeks to create, combining traditional craftsmanship with modern technology for fast, precise results.
Are your diamonds conflict-free?
All diamonds are guaranteed conflict-free through the Kimberley Process, ensuring ethical sourcing and compliance with UN resolutions.
What jewelry services do you offer?
We provide repairs, appraisals, engraving, insurance, gold buying, and custom design services alongside diamond and jewelry sales.
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