Astra Jewelers — Your neighborhood jeweler, redefined.
A fine jewelry studio in Upper Montclair offering elevated fine jewelry, curated diamond selections, and expert jewelry services.
Address: 250 Bellevue Ave 2nd Floor, Montclair, 07043, New Jersey
Family-owned. Fine Jewelry. Art-forward.
Astra Jewelers is a family-owned fine jewelry studio founded by husband-and-wife team Eddie and Stephanie Dieguez. Built on a shared passion for exceptional gemstones and craftsmanship, Astra Jewelers offers a more personal and intentional jewelry experience.
Located in Upper Montclair, our appointment-driven studio is redefining what it means to be your neighborhood jeweler. We specialize in thoughtfully curated fine jewelry and hand-selected gemstones, each chosen for its beauty, quality, and timeless appeal.
More than a traditional jewelry store, Astra Jewelers is also an art-forward space. We proudly showcase local artists, creating an environment where fine jewelry and creative energy coexist.
The Astra Experience
Every appointment is curated in advance. Select
what brings you in — we’ll prepare a private viewing
tailored to you.
Engagement Rings & Wedding Bands
Not just a ring — the beginning of your story.
We curate natural and lab-grown diamonds, distinctive settings, and thoughtful guidance to help you choose with confidence.
Custom Creations
Have an idea? A sketch? A family stone?
We design refined, one-of-a-kind pieces through a collaborative, elevated process from concept to final polish.
Fine Jewelry Collection
A rotating selection of elevated, everyday luxury — diamond bracelets, gemstone rings, statement earrings, and modern classics. Curated. Never mass-produced.
Gemstone Sourcing
Searching for something specific?
We source exceptional diamonds and colored gemstones for clients who want something rare, personal, or unexpected.
Jewelry Care & Refinement
Professional resizing, restoration, polishing, and maintenance — because fine jewelry deserves expert care.
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Let's Connect
Whether you’re exploring a custom design, choosing a meaningful piece, or need assistance with jewelry you already love, we’d love to hear from you.
What clients say
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They helped me pick the perfect pear diamond and explained everything clearly. In-store viewing made all the difference.
Custom ring turned out better than expected. Great guidance, honest pricing, and premium finishing.
Super friendly team. Tried multiple shapes and settings—walked out confident with my final choice.