Shops & markets / Downtown
Costa D'Oro Jewelers
A downtown jeweler and goldsmith on Jefferson: custom pieces, diamonds, appraisals and jewelry and watch repair.
01 / The story of this place
Make time for these
Costa D'Oro Jewelers is the shop of Kosta Vrahnos, a master goldsmith and certified gemologist. He works with diamonds, gemstones and custom designs, does appraisals and repairs both jewelry and watches. His specialty is giving sentimental pieces new life, redesigning an heirloom ring or a box of old gold into something you'll actually wear. Shopping for an engagement ring? You'll be talking directly with the person who makes it.
- Master goldsmith and certified gemologist
- Custom designs and engagement rings
- Heirloom jewelry redesign
- Appraisals plus jewelry and watch repair
Is this your venue? Update this page for free ↗
¼ · Stay
Sleep right around the corner
Courtyard by Marriott Detroit Downtown1 min walk · Downtown · Jefferson Avenue / Millender Center (next to the RenCen)Book direct ↗
Detroit Marriott at the Renaissance Center4 min walk · Downtown · Riverfront / Renaissance CenterBook direct ↗
Kasa Cadillac Square Detroit5 min walk · Downtown · Cadillac Square / Campus MartiusBook direct ↗
Sources & fact check · Checked: 2026-10-01
An independently written bilingual guide. This collection is not an attendance-based ranking.
03 / Events
Events at this place
Published events automatically linked from our event guide. Times are local to the venue.
We have no published upcoming events linked to this place yet. That does not mean the venue has no events; check its official calendar too.
Official website & visitor information ↗