Designed With You
Sit down with a jeweler who listens, then watch your engagement ring or custom piece come to life exactly the way you imagined it.
Downtown Naperville's Family Jeweler
Fine Jewelry,Made for the Yes
A trusted downtown Naperville jeweler for engagement rings designed with you, expert repairs, and the kind of personal attention you only get from a family jeweler.
Free design consultation · By appointment or walk-inNaperville, IL
Collections
Collections & Services
Pieces, prices, and services shown are illustrative demo content for this concept site and may not reflect the store's actual selection, pricing, or availability.
Crowd Favorites
Custom Engagement Ring
Diamond Solitaire Ring
Diamond Pendant Necklace
Engagement rings, wedding bands, and bridal sets for the moment you've been planning.
Custom Engagement Ring
From $2,500Designed with you from the center stone out, in your choice of diamond, setting, and metal for a ring that's truly one of a kind.
Signature★ Popular
Diamond Solitaire Ring
From $1,800A timeless single-stone setting that lets a beautiful diamond take center stage, sized and set just for you.
★ Popular
Wedding Bands
From $600Classic and contemporary bands in gold and platinum, sold individually or as a matched his-and-hers pair.
Great Value
Bridal Set
From $3,200A coordinated engagement ring and wedding band designed to sit together perfectly, finished as one complete look.
Necklaces, earrings, bracelets, and loose diamonds for everyday sparkle and special days alike.
Diamond Pendant Necklace
From $750A delicate diamond pendant on a fine gold chain, an easy-to-wear gift that goes with everything.
★ Popular
Diamond Stud Earrings
From $900Brilliant-cut studs in your choice of carat weight and metal, a classic that never goes out of style.
Signature
Tennis Bracelet
From $2,200A continuous line of matched stones set in gold for steady, elegant sparkle on the wrist.
Gemstone Earrings
From $650Colored stones from sapphire to emerald set as studs or drops to mark a birthday, milestone, or just because.
Great Value
Loose Diamonds
ConsultHand-selected loose diamonds across a range of cuts and grades, ready to set into the piece you have in mind.
Luxury watches, anniversary pieces, and gifts to mark the occasions worth remembering.
Luxury Timepiece
From $1,500A refined automatic or quartz watch chosen to be worn for years and handed down for many more.
★ Popular
Anniversary Jewelry
From $500Thoughtful pieces for every milestone, from a first-year keepsake to a stone that marks decades together.
Signature
Pearl Strand
From $450A hand-knotted strand of cultured pearls with a secure clasp, a graceful gift for any generation.
Great Value
Gift Selections
From $150Pendants, charms, and small luxuries gift-wrapped and ready, with help finding something they'll love.
New
Custom design, repairs, and appraisals handled with care by our in-house team.
Custom Design
ConsultBring an idea, a sketch, or an heirloom to reimagine, and we'll design and craft a piece that's entirely yours.
Signature
Repair & Resizing
From $45Ring sizing, prong retipping, chain repair, and stone setting done on-site so your favorites are good as new.
Great Value
Jewelry & Insurance Appraisal
From $75A detailed written appraisal of your pieces for insurance, estate, or peace of mind.
Watch Battery & Service
From $15Battery replacement, band adjustment, and cleaning while you wait, plus full service for finer timepieces.
Quick
Why us
What sets us apart
Expert Repairs
Resizing, restringing, stone setting, and watch service done on-site by experienced hands that treat your pieces like their own.
Personal Attention
No pressure and no commission chase, just honest guidance from a family jeweler who's here for every anniversary after the first.
Trusted Downtown
An independent jeweler right in the heart of downtown Naperville, where neighbors come back for the moments worth celebrating.
Your Family Jeweler in Naperville
We're an independent fine jewelry store in the heart of downtown Naperville, here for the moments that matter most.
01
Founded by Joe Costello in 1979 and family-owned ever since, Costello Jewelry Company is the kind of jeweler you remember, a downtown Naperville shop where you're greeted warmly, never rushed, and helped by people who genuinely love what they do. From the first engagement ring to every anniversary after, we're honored to be part of the moments families gather to celebrate.
02
Whether you're designing a ring from scratch, choosing a gift, or trusting us with a treasured heirloom to repair, you'll get the same honest, personal attention every time. It's the kind of care that's hard to find anymore, and it's exactly why our neighbors keep coming back.
Custom
Design With You
On-Site
Expert Repairs
Free
Design Consultation
Gallery
A Closer Look
A glimpse of the craftsmanship and pieces you'll find in our downtown Naperville showroom.
Visit
Visit Our Store
Find Us
33 West Jefferson Avenue
Naperville, IL 60540
We're on Jefferson Avenue in the middle of downtown Naperville's shopping district, a short walk from the covered bridges and fountains of the Riverwalk along the DuPage River.
Hours
- Monday
- 10:00 AM – 6:00 PM
- Tuesday
- 10:00 AM – 6:00 PM
- Wednesday
- 10:00 AM – 6:00 PM
- Thursday
- 10:00 AM – 7:00 PM
- Friday
- 10:00 AM – 6:00 PM
- Saturday
- 10:00 AM – 5:00 PM
- Sunday
- Closed
Book a Consultation
Tell us what you have in mind and we'll set up a free design consultation, answer your questions, or arrange a time for a repair or appraisal.