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Business Details
50 Years
experience
Custom Jewelry Design & Repair Services in Denver
Denver Diamonds & Jewelry has been a trusted name in the jewelry industry since 1976, offering a comprehensive range of services including custom design, repair, and appraisal of fine jewelry. Our commitment to exceptional customer service has been recognized by 5280 Magazine, which voted us Best Customer Service in 2012. We specialize in creating personalized jewelry solutions that align with clients' unique preferences and budgets, supported by the expertise of our Graduate Gemologist and certified diamond cutter.

Our store's relocation to the historic University Building in downtown Denver reflects our deep roots in the community and dedication to providing a welcoming environment for all clients. We pride ourselves on sourcing high-quality diamonds and gemstones, ensuring all diamonds are conflict-free and certified by reputable laboratories such as GIA and EGL. With decades of combined experience, our team remains dedicated to celebrating life's special moments through exquisite jewelry craftsmanship.
Services
Custom Jewelry Design Diamond Appraisals Jewelry Repair Gemstone Sales Bridal Jewelry Estate Jewelry Diamond Cutting Jewelry Consignment Conflict-Free Diamonds Jewelry Education
Details
  • Year established: 1976
Highlights and features
  • We offer free appraisals by a Graduate Gemologist with 40+ years of diamond industry experience.
  • Our in-house diamond cutting is performed by Colorado's only certified Graduate Gemologist and diamond cutter.
  • We provide personalized financing options for custom jewelry purchases.
  • We guarantee conflict-free diamonds certified by GIA and EGL laboratories.
  • We combine historic expertise with modern design techniques for unique jewelry solutions.
What people say
Best Customer Service Expert Craftsmanship Personalized Attention Historic Expertise Conflict-Free Diamonds
Services
Custom Jewelry Design
Our custom design process begins with lifestyle consultations to create unique jewelry pieces. Using CAD technology and hand-carved wax models, we craft one-of-a-kind designs in any metal type. Clients receive detailed cost estimates and can complete projects in 10-14 days, ensuring personalized creations that match individual preferences and budgets.
Diamond Appraisals
Certified Graduate Gemologists provide comprehensive appraisals for insurance and personal records. Services include stone identification, metal analysis, and replacement value assessments. Appraisals are free for purchases and can be updated every two years, ensuring accurate documentation for your valuable jewelry investments.
Jewelry Repair
We offer complete repair services for all metals and jewelry types, including prong replacement, stone setting, and ring sizing. Our skilled bench jewelers handle intricate repairs while maintaining structural integrity. Additional services include engraving, pearl restringing, and rhodium plating for white gold pieces.
Diamond Cutting
Colorado's only Graduate Gemologist and certified diamond cutter performs precision cutting on rough diamonds. Services include recutting vintage stones and shaping various diamond types. This specialized expertise ensures optimal brilliance and value for both new and heirloom diamonds through professional cutting techniques.
Bridal Jewelry
We offer extensive bridal collections featuring engagement rings, wedding bands, and anniversary pieces. Our selection includes designer brands like Valina Bridal and Crown Ring, with options for traditional and alternative metals. Custom bridal designs ensure perfect matches for engagement and wedding ring sets.
People
John Buchholz
Graduate Gemologist & Diamond Cutter
With over 40 years in the diamond industry, John is Colorado's only certified Graduate Gemologist and diamond cutter. He founded the business in 1976 and specializes in diamond sourcing, cutting, and custom design consultation.
Vickie Zwiers
Diamond Specialist & Store Manager
Certified in GIA Diamond Grading, Vickie has served Denver's jewelry needs since 1976. She joined the team in 1995, bringing expertise in custom design and client consultation while managing daily store operations.
Questions
What jewelry services do you offer?
We provide custom design, appraisals, repairs, diamond cutting, and sales of gemstones and bridal jewelry.
Are your diamonds certified as conflict-free?
Yes, all diamonds are guaranteed conflict-free and certified by GIA or EGL laboratories.
Do you offer jewelry appraisals?
Yes, we provide free appraisals for insurance purposes by a Graduate Gemologist.
How long have you served Denver?
We've operated in downtown Denver since 1976, with continuous service for over 45 years.
Can you repair heirloom jewelry?
Yes, our expert bench jewelers handle repairs for vintage and modern pieces with care.
Reviews (4)
Alexandria Necker
Jan 30, 2022 Report
John is truly an expert gemologist, along with being a trustworthy and honest man. He went above and beyond to help me as a fellow jeweler, and I'd recommend him and his services to anyone. I feel very fortunate to have been referred to him, and I look forward to working with him on a stone cutting or jewelry project in the future.
Danny B.
Dec 24, 2021 Report
Recently visited Denver Diamonds & Jewelry to look into selling some of my wife's jewelry due to her passing. I met the owner John B. we sat down to discuss what I had. He took his time to examine them and look at the pieces. He was very through and gave me a fair price for it. I would recommend this store to anyone.
Karl Umland
Oct 21, 2021 Report
Experience was great and well priced. He set expectations very clearly and kept his word. Quality for our white gold bracelet repair was very good and completely not noticeable. His dog cooper is super cute and fun to pet while you wait. He is me and my wife's Jeweler for life. Highly recommend.
Amanda Nenaber
May 17, 2021 Report
John at Denver Diamonds has been a pleasure to work with. My husband had my custom wedding band and an additional diamond band made here. John was friendly, easy to work with, timely and responsive. He is a pleasure to talk with and truly cares about his customers. I would recommend Denver Diamonds to anyone looking for a true one on one connection to make you feel like your purchase and experience are memorable!