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Astra Jewelers fine jewelry studio in Upper Montclair, NJ
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A jeweler measuring a ring at a workbench
Custom Jewelry Design · Upper Montclair, New Jersey

Custom jewelry,
designed around
your stone

A private studio on Bellevue Avenue where a commission starts with loose stones on the desk, not a catalogue. You see a 3D rendering, then wear a printed model of the finished piece, before anything is cast. Inherited stones welcome.

Stone Chosen First Wear It Before It Is Cast Heirloom Resets
How a commission runs
Start Your Design
Tell us roughly what you have in mind. No obligation. Nothing is ordered until you say so.
You wear it before it is castA 3D rendering, then a printed model on your hand. Changes cost a conversation, not a recast.
Jewelers of America memberVerified industry membership with JBT credentials, at the same Upper Montclair address.
250 Bellevue Ave, second floorServing Montclair, Glen Ridge, Bloomfield, Verona, Cedar Grove and Essex County.
How a commission runs

Six steps,
and one of them is yours to reject

Most custom pages describe four beats. Draw it, print a wax, cast it, set it. That skips the two decisions that actually determine whether you like the finished piece, so here is the whole sequence including the point where you say no.

01

Sit down with the stones

A booked appointment means the cases are open and loose stones come out on the desk. Bring a photograph, a ring that fits, an inherited piece, or nothing at all. Budget is discussed at this point rather than at the end, because it decides the stone.

02

Choose the stone first

Natural or lab grown, shown side by side at matching specification with the certificate in front of you. Cut is what makes a diamond bright, which is why a well cut stone one clarity grade lower usually looks better than the reverse.

03

See it as a rendering

The design is drawn in 3D around your stone and its exact measurements. You see it from every angle before a single millimeter is committed. Changes at this stage cost nothing but a conversation.

04

Wear the printed model

A resin or wax model of the finished piece, printed and put on your hand. This is where band width and stone height get settled, because proportions on a screen and proportions on a finger are not the same thing.

05

Cast, set and finish

Once you approve the model the piece is cast in your metal and the stone is set by the bench jewelers the studio has used for years. Setting style, prong count and finish were all agreed before this point.

06

Collect it, then look after it

You see the finished piece before you take it. After that, prong checks and cleaning keep it wearable, and resizing or retipping is handled at the studio like any other repair.

Choosing the stone

The part that decides
everything after it

A cluster of brilliant cut diamonds set in white metal

Natural or lab grown

Same mineral, same grading scale. Nobody can tell them apart by eye. What changes is price, which decides how large a stone your budget reaches or how good a cut you can afford.

Shown together, not sold separately. Both come out on the desk at matching specification so the comparison is yours. There is a longer version in our lab grown vs natural diamonds guide.

A loose gemstone held in tweezers under a lamp

Cut before clarity

Cut is what makes a diamond return light. A well cut stone one clarity grade lower usually looks brighter than a poorly cut stone with the better certificate. It also costs less.

Eye clean is the practical test. If an inclusion cannot be seen without magnification at normal distance, it is doing nothing to the way the ring looks on a hand.

Eternity bands set with sapphires, rubies and emeralds

Colored stones behave differently

Sapphire and ruby are hard enough for daily wear. Emerald is included by nature and usually oiled. Opal and pearl are softer again. Tanzanite is easier to chip than its price suggests.

Hardness decides the setting. A softer stone wants a bezel or a protected profile rather than raised prongs, which is a design decision made before the drawing, not after.

A ring sizer marked in millimeters beside a gauge

Millimeters, not carats

Two stones at the same carat weight can differ noticeably across the top, because weight can hide in a deep pavilion. The measurement that matters for how large a ring reads is the diameter.

The setting is cut to your stone. Seat depth, prong position and the gap under the stone are all built to the one you own, which is why the stone is chosen first.

Choosing the metal

How it will look
in ten years

Metal is usually picked on color in the showroom and regretted on wear. The differences are real and they are easy to explain, so here they are before you choose.

A white metal band set with small diamonds

Platinum

When platinum is scratched it displaces rather than sheds, so the metal moves around the mark instead of leaving. Prongs thin more slowly, which matters for the part of a ring that holds the stone.

It is denser and heavier on the hand, it develops a soft patina that some people prefer and others have polished off. It also costs more per gram.

Yellow gold bands stacked and reflecting warm light

14k and 18k gold

14k is harder. More alloy, more resistance to knocks and daily wear. The color reads slightly cooler.

18k is warmer and softer. Richer yellow and more precious metal by weight. Also more willing to pick up dings. Neither is the correct answer. It depends on whether the piece is worn every day or occasionally.

A ring being polished by hand at a bench

White gold and rhodium

White gold is yellow gold alloyed pale and then plated with rhodium to make it bright white. That plating wears, usually first on the back of the shank. Re-plating is a routine job every few years.

Nobody mentions this at the point of sale often enough. It is not a fault. It is maintenance. Worth knowing before you choose white over platinum.

Setting tools and gravers arranged above a jeweler bench

Setting style and your hands

A high solitaire throws light and also catches on gloves, hair and car doors. A bezel or a lower profile trades some sparkle for a stone that survives a life spent using your hands.

Micro pave reads as delicate because it is. Small stones want checking periodically, which is ordinary jewelry repair work rather than a defect.

Inherited stones

Before we touch
your grandmother's ring

Resetting a family stone is the work people are most nervous about. They are right to ask questions first. Three things are worth knowing before anything is unset.

A jeweler workbench laid out with hand tools

Damage hides under prongs

A chip at the girdle or a hairline running from an inclusion can sit invisible under a prong for fifty years. It is found by looking at the stone out of the setting, which is the first thing that happens rather than the last.

Antique rings with colored stones in raking light

Old cuts are not modern stones

Old European and transitional cuts often carry thin girdles. A thin girdle is more fragile at the moment of setting. That does not rule out a reset. It changes which settings are sensible.

A jeweler measuring a piece with a caliper

Sometimes the answer is no

Occasionally a stone should stay where it is. Occasionally the old mount is worth keeping and restoring instead. You get told that plainly. An honest no costs a sale and saves a stone that cannot be replaced.

Reputation

What clients say

★★★★★
Very happy with the service I received. Custom design, stone comparisons, 3D models, wax models. I ended up with exactly what I wanted. Eddie and Stephanie did a great job.
Chris Harrison
★★★★★
We purchased our wedding bands and engagement ring from Astra Jewelers. From beginning to end the process was not only smooth and efficient but fun. They never made us feel like we were asking too many questions and they guided us through the entire process. The rings turned out even better than we had imagined due to their input. They are skilled and knowledgeable about diamonds and fine jewelry. Their inputs were really helpful when designing the ring. They are able to provide not only 3d renderings of the designs but also 3d prints so that you can wear the rings and see them before they are created. They treat their customers like family. Amazing people, beautiful jewelry - highly recommend!!!
Shafaq Tanweer
★★★★★
This is the perfect spot for high quality jewelry and beautifully crafted custom pieces. The customer service is truly top-notch. They take the time to understand your vision and expertly bring custom designs to life with exceptional craftsmanship. I absolutely love my new custom ring!
Clara
★★★★★
It was lovely to work with Stephanie and Eddie for a custom necklace. They are extremely knowledgeable and use high quality materials. I highly recommend Astra Jewelers!
Sarah Toosarvandani
★★★★★
Needed to get my engagement ring resized and they were so quick, helpful and thorough! Had it back ASAP (even over the weekend). Can’t say enough good things
Erin Baschwitz
★★★★★
My wife and I had a great experience purchasing a pair of beautiful wedding bands here. Stephanie and Eddie were super helpful and pleasure to work with!
Gabriel Maiolo
★★★★★
The place is welcoming, and the people are incredibly welcoming, accommodating, and kind. It reminded me of family-owned businesses that treat you like family when you visit.
Angela Zago
★★★★★
I visited Astra Jewelers in Montclair, NJ. The owners were nice and welcoming. I was there to sell some old gold jewelry and received an offer more than what I expected. I would highly recommend any friend to check them out. If you are into pink sapphires and diamonds, they have something you would really like!
Christy Hyonsuk

Read all 12 reviews on Google, rated 5.0

Before you come in

Custom design,
answered

How does custom jewelry design work?

It starts with a conversation at the studio, usually with stones on the desk rather than photographs on a screen. The stone is chosen first because the setting is built to its exact measurements. You then see a 3D rendering, then a printed model you can wear. Nothing is cast until you approve it.

Why is the stone chosen before the design?

Because a setting is built to a specific stone. Two diamonds of the same carat weight can differ by half a millimeter across. Prong position, seat depth and the gap under the stone are all cut to the one you actually own. Designing first and shopping for a stone to fit afterwards is how a setting ends up compromised.

Can you use a diamond or a stone I already have?

Yes. Resetting inherited stones is some of the most satisfying work in the studio. It starts with looking at the stone out of its old setting, because chips at the girdle and hairline damage hide under prongs for decades. You get an honest answer about what a stone can take before anything is unset.

Should I choose a natural or a lab grown diamond?

They are the same mineral graded on the same scale, so the real question is what your budget reaches. At matching specification a lab grown stone costs less, which usually buys size or a better cut grade. We show both side by side in daylight rather than steering you. The longer explanation is in our lab grown vs natural diamonds guide.

What metal should a custom ring be?

Platinum displaces rather than sheds metal when it wears, so prongs thin more slowly and a scratch pushes the surface around instead of removing it. 14k gold is harder than 18k and holds up better to daily knocks, while 18k is warmer in color and softer. White gold is yellow gold plated with rhodium, so it needs re-plating every few years to stay bright.

Which setting is right for how I use my hands?

A high solitaire catches light and also catches on gloves, hair and car doors. A bezel or a lower profile protects the stone and suits people who work with their hands. Micro pave looks delicate because it is. Small stones need checking periodically. That trade off is worth deciding before the piece is designed rather than after a stone is lost.

What happens if the printed model is not right?

That is exactly what the model is for. Proportions read differently on a hand than on a screen. Band width, stone height and the gap under the shank are the three that usually change. The design is adjusted and printed again before anything is cast.

Do you design pieces other than rings?

Yes. Pendants, earrings, bracelets and redesigns of jewelry that is no longer worn all go through the same process. Colored stones bring their own considerations, since emerald and opal are far softer than sapphire or ruby and want a setting that protects them.

Where are you located?

Astra Jewelers is at 250 Bellevue Ave, 2nd Floor, Montclair, NJ 07043, in Upper Montclair. Design appointments are Monday to Saturday, 10:00am to 6:00pm. The studio serves Montclair, Glen Ridge, Bloomfield, Verona, Cedar Grove and the rest of Essex County.

Visit the studio

FIND ASTRA IN UPPER MONTCLAIR

We are a second-floor studio on Bellevue Avenue. Appointments get you undivided attention, and walk-ins are welcome during opening hours.

Address

250 Bellevue Ave, 2nd Floor, Montclair, NJ 07043

Hours: Mon-Sat: 10:00am-6:00pm

Get Directions

+1-973-289-9290