Jewelry Store in Sussex, WI
Costa's Fine Jewelry & Coins
Your Go-To Jewelry Store in Sussex, WI
Finding the perfect piece of jewelry—whether it's for a milestone moment or simply a well-deserved gift to yourself—should feel exciting, not overwhelming. At Costa’s Fine Jewelry and Coins in Sussex, we make that experience both memorable and meaningful. Our store stands out for its curated selection of ethically sourced fine diamonds, rare gemstones, and numismatic treasures, paired with personalized service that makes every visit special.
From custom-designed engagement rings to GIA-certified loose stones, expert repairs, and investment-grade coins, our knowledgeable team is here to guide you. Whether you're shopping, designing, or investing, Costa’s is your trusted partner in all things fine jewelry and numismatics.
About Costa’s Fine Jewelry and Coins
Costa’s Fine Jewelry and Coins has built a reputation for excellence through
decades of service in Wisconsin. We’re proud to be a family-owned and
operated business, offering high-quality jewelry and expert guidance in
selecting meaningful pieces for life’s biggest moments. Our store is more
than just a place to shop—it’s a space where relationships are built and
milestones are celebrated.
Our Sussex location brings our services closer to you, featuring a full
selection of fine diamonds, rare gemstones, and numismatic treasures.
Every item we carry reflects our commitment to quality, ethical sourcing,
and timeless beauty.
In addition to offering top-tier jewelry, Costa’s Fine Jewelry and Coins also
provides custom design services, jewelry repairs, and certified appraisals.
Whether you’re restoring a family heirloom or designing a brand-new
engagement ring, we bring craftsmanship and care to every detail.
Services Offered at Our Sussex Jewelry Store
Fine Diamonds
We carry a curated collection of certified fine diamonds in a range of shapes, settings, and sizes. Whether you’re looking for a solitaire engagement ring, eternity band, or a custom wedding set in platinum, rose gold, or white gold, we’ll help you find—or create—the perfect piece.
Not sure if you want a natural or lab-grown diamond? Our experts will explain the differences and help you choose what best fits your values and budget. All diamonds come with trusted certification (such as GIA) and full education on the 4Cs—cut, clarity, color, and carat weight.
Rare Gemstones
Gemstone lovers will find a diverse collection of rare stones, including sapphires, emeralds, rubies, and more. Every gemstone is handpicked for its quality, origin, and brilliance. Whether you’re designing a vintage-style cocktail ring or a unique gemstone necklace, we offer custom settings and expert guidance to bring your vision to life.
We also provide gemstone certification, so you know exactly what you’re investing in—both in beauty and value.
Numismatics
Costa’s is more than a jewelry store—we’re also a trusted name in numismatics. Our Sussex store offers a selection of investment-grade coins, bullion coins, and rare proof coins. Whether you’re a new collector or an experienced investor, we buy and sell coins backed by grading standards such as MS-70.
Interested in buying or selling gold and silver? We offer transparent valuations and fair pricing backed by decades of experience. If you have questions about coin grading or coin authenticity, we’re here to help.
ADDITIONAL JEWELRY SERVICES
We're proud to offer a comprehensive range of jewelry services to meet all your needs:
GIA-graded loose diamonds
Conflict-free diamonds
Colored Gemstone Jewelry
Designer Jewelry
Jewelry Repair
Pearl Restringing
Jewelry Trade-ins
Why Choose Costa’s in Sussex, WI
Choosing a jewelry store isn’t just about inventory—it’s about trust. At
Costa’s Fine Jewelry and Coins, we’re proud to bring a personalized,
transparent, and community-focused experience to Sussex.
Here’s what makes us different:
Family-Owned Values: Every interaction reflects our deep
commitment to integrity and long-term customer relationships.
Custom Work: From idea to final polish, our team collaborates
with you on designs that are completely your own.
Certified Quality: Whether you’re buying a diamond, a sapphire,
or a rare coin, everything is backed by trusted certifications.
Expert Repairs: Need a ring resized or a family heirloom restored?
Our in-house jewelers treat your jewelry with care and precision.
Ethically Sourced Materials: We ensure our diamonds and
metals meet ethical sourcing standards.
With Costa’s in Sussex, you’ll enjoy all the benefits of a full-service jewelry
store without sacrificing the personal service only a local, family-run
business can offer.
WHAT OUR CUSTOMERS SAY
My husband and I cannot be more excited about our custom wedding rings! They are stunning!
Found the most beautiful necklace at Costa’s for my anniversary. It was the perfect gift
The quality at Costa’s is unmatched. I have three diamond bracelets from them and I won’t buy diamonds anywhere else
I wanted to get my grandma's earrings turned into a necklace and it turned out so perfect. I wear it every day!
I bought my husband a new necklace from them. The Jewelry is very affordable yet super high quality.
Best jewelry seller in Waukesha. I am a big ring girl and this place has everything I need!
Frequently Asked Questions
What types of jewelry does Costa’s Fine Jewelry and Coins offer?
We specialize in engagement rings, wedding bands, rare gemstones, and custom-designed fine jewelry. You can also explore our collection of vintage and antique jewelry, eternity bands, and anniversary rings.
Do you offer jewelry repairs in Sussex?
Yes! Our in-house jewelers provide repairs including ring resizing, prong tightening, polishing, and gemstone replacement.
Can I get a custom-designed engagement ring?
Absolutely. We walk you through the design process from sketch to finish, using your choice of diamonds, gemstones, and settings.
What is numismatics, and do you buy coins?
Numismatics is the study and collection of currency. We buy and sell rare coins, bullion, and investment-grade collectibles, offering expert appraisals and grading knowledge.
How do I know if a diamond is real in Sussex, WI?
All of Costa’s Fine Jewelry and Coins diamonds come with certification (e.g., GIA). We also educate customers on the 4Cs and offer in-store demonstrations using tools like loupes and testers.
Do you offer financing options for large purchases?
Yes—we provide flexible financing plans for qualified buyers. Ask in-store for details about our 0% interest offers.
Stop by Costa’s Fine Jewelry and Coins in Sussex Today!
If you’re looking for a trusted jeweler or a jewelry store near Sussex, WI, Costa’s Fine Jewelry and Coins is your go-to destination. Call us today at (262) 360-5516 or stop by to explore our dazzling selection of fine diamonds, rare gemstones, and numismatic treasures.
Stop by to browse our showroom or book a personalized consultation. Whether you’re ready to buy, sell, or design something entirely new, Costa’s Fine Jewelry and Coins is here to help you make the perfect choice.
Costa's Fine Jewelry and Coins in Waukesha offers competitive prices on fine diamonds, rare gemstones, and bullions. Family-owned, we specialize in engagement rings, GIA-certified diamonds, jewelry repair, and estate buying.
Get in Touch
Hours of Operation
10am-5pm Tuesday
10am–6pm Wed–Fri
10am-3pm Saturday
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