Diamond Infinity Lapel Pin with Chain-Linked Stud
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14k white gold, lab-created diamonds
A client came to us wanting to adapt a crown-and-chain lapel design she had seen, swapping in an infinity symbol to match a pendant she already owned. She asked to size the infinity motif down from the standard reference size so it would match her existing piece, and the team confirmed with their jeweler that the smaller scale would still hold up with the connecting chain. On seeing the finished render she wrote simply: 'I love it. I'm ready to move forward.'
'I love it. I'm ready to move forward.' — on seeing the first render
Quick specs
Design type
Primary Metal
Shape / Cut
Primary Stone
Accent Stones
Design Complexity
Intent: Certainty
Size
Infinity motif approximately 15mm wide; connected via two draped chains (one long, one short) to a single round diamond stud, bezel set.
How they made it distinctive
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01
Infinity motif reduced to roughly 15mm, below the studio's usual minimum, specifically to match an existing pendant the client owns
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02
Single bezel-set diamond stud connected to the infinity pin by two draped chains rather than a single fixed setting
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03
Design adapted from a crown-and-chain reference image with the crown swapped for an infinity symbol at the client's direction
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04
Chain attachment point placed at the bottom center of the infinity symbol, mirroring where the original inspiration piece connected its chain
How you'd make it yours
Motif: this piece uses an infinity symbol — a new commission could use a different symbol or letterform in the same pave-and-chain format
Stone type: this piece uses lab-created diamonds — a new piece could use natural diamonds or a colored gemstone for contrast
Metal: this piece is 14k white gold — the same design works in yellow or rose gold
Chain configuration: this piece uses two draped chains to a single stud — a new piece could use a single chain or a different connection point
One of a kind: this exact pin was designed and sized to match one client's existing pendant and is not reproduced — a new commission is an original piece inspired by this one, not a copy
Design changes made
The infinity motif was reduced from the initially suggested dime-sized reference down to a smaller scale to match an existing pendant the client owns, after the jeweler confirmed the smaller size could still support the connecting chain.
Who this is for
This piece is for someone who wants a distinctive accent for a formal or milestone occasion rather than an everyday piece of jewelry. It's especially right if you already own a piece with personal meaning and want a coordinating accessory that echoes its design language rather than standing alone.
How it's made
Once the design was approved, the piece moved from sketch to a 3D CAD model, which was then 3D-printed in resin so the client could see an accurate preview of scale and proportion before any metal was committed. The resin model was attached to a wax tree, invested in plaster, and fired in a kiln to burn out the wax and resin, leaving a hollow mold. Molten 14k white gold was then cast into that mold under pressure to form the raw pin and stud.
After casting, the piece was cleaned, polished, and finished to a bright white gold shine throughout. The pave diamonds along the infinity symbol were set by hand one at a time along the curved profile, while the single diamond on the stud was secured in a bezel setting. The two connecting chains were then attached at the bottom center of the infinity motif and at the stud, exactly where the client requested.
Key note
The infinity motif was engineered at a reduced 15mm scale — smaller than the studio's standard recommendation — specifically so the piece could be matched to an existing pendant without compromising the chain attachment.
Pricing guidance
A pave diamond lapel pin with a connected diamond stud and chain detail sits in the mid-to-upper range for custom pieces of this complexity. Most of the cost comes from the hand-setting labor required for the pave diamonds along a curved, small-scale motif, plus the diamond stud itself. Sizing the piece down from a standard reference size, as happened here, also adds a layer of setting precision that factors into the cost.
Moves price up ↑
- ↑ Increasing the number or size of pave diamonds along the infinity motif
- ↑ Upgrading from lab-created to natural diamonds
- ↑ Adding diamonds to the stud beyond a single stone
- ↑ Choosing 18k gold instead of 14k
- ↑ Lengthening or thickening the connecting chains
Moves price down ↓
- ↓ Reducing the pave diamond count on the infinity symbol
- ↓ Using a single larger accent stone instead of multiple pave stones
- ↓ Choosing sterling silver with rhodium plating instead of solid white gold
- ↓ Simplifying to a single chain rather than two
- ↓ Omitting the diamond on the connecting stud
Questions people ask
This infinity motif was made at approximately 15mm, smaller than the typical dime-sized reference of about 19mm most jewelers recommend as a minimum. Going smaller than that risks the pave diamonds becoming too delicate to set securely, and the motif may struggle to support the weight of a connected chain. A jeweler should confirm feasibility before committing to a smaller size, since the chain attachment point needs enough structural metal to hold securely. At 15mm, the piece still comfortably supports two connecting chains without issue.
Lab-created and natural diamonds are chemically and visually identical — same hardness, same brilliance, same clarity grading system. The difference is origin: lab diamonds are grown in a controlled environment rather than mined. For a pave setting with many small stones, lab diamonds are the more common choice because they allow more stones to be used within the same budget without any visible difference in appearance.
A pin like this typically uses a horizontal pin stem or a small post-and-clutch mechanism on the back of the main motif, similar to a brooch, while the connected stud end can either rest against the fabric or attach with its own small pin back. The two pieces are joined by a fine chain so they hang and move together once secured. Because the piece is meant for formal or special-occasion wear rather than everyday use, the attachment is designed for security during a single event rather than constant daily wear.
A pave diamond infinity pin connected to a diamond stud by chain sits in the mid-to-upper range for custom lapel pieces, largely because of the hand-setting labor for the pave diamonds and the cost of the diamond stud itself. Choosing lab-created diamonds instead of natural stones keeps the cost more moderate while preserving the same appearance. Metal choice, diamond count, and chain complexity are the main variables that move the price up or down from there.
A piece like this typically takes about one week for the design phase — sketch, 3D model, and rendered preview for approval — followed by roughly three to four weeks of production once the design is approved. Rush timelines are possible when needed for a specific date, though they compress the schedule and require quick turnaround on approvals at each stage. Production includes wax/resin modeling, casting, hand-finishing, and stone setting, each of which takes real time to do properly.
Once a pave-set piece like this is cast and the stones are set, the motif's size generally cannot be changed without remaking it, since the diamonds are set into a fixed structure. Chain length, however, can typically be adjusted more easily since it's a separate component from the set motif. If a client wants a different chain length after seeing the finished piece, that's usually a simpler adjustment than resizing the pave section itself.
White gold is typically rhodium-plated to achieve its bright white finish, and that plating can wear thin over years of contact and handling, gradually revealing a warmer tone underneath. For an occasional-wear piece like a lapel pin, this happens much more slowly than with daily-wear jewelry like a ring. When the color does start to shift, a jeweler can re-plate the piece to restore the original bright white finish.
