Rectangular Diamond Push Lock | Lisa Robin
Rectangular Diamond Push Lock | Lisa Robin
Rectangular Push Lock with Round Diamond on paper Clip Chain | Lisa Robin
Rectangular Diamond Push Lock | Lisa Robin
Rectangular Diamond Push Lock | Lisa Robin
Rectangular Diamond Push Lock | Lisa Robin
Rectangular Diamond Push Lock | Lisa Robin
Rectangular Push Lock with Round Diamond on paper Clip Chain | Lisa Robin
Rectangular Diamond Push Lock | Lisa Robin
Rectangular Diamond Push Lock | Lisa Robin

Rectangle with Round Diamond Push Lock Necklace

A 20mm 14K gold rectangle charm with a single 1/10 carat round brilliant diamond. Clean geometry, classic sparkle, for the push lock system.
$ 3,495.00 $ 2,658.45 Save $ 836.55
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Color

The Rectangle with Round Diamond Push Lock Necklace centers on a 20mm 14K gold rectangle charm with a single round brilliant diamond — a geometric charm with a classic brilliant cut.

Metal 14K yellow gold, sustainably sourced
Charm Material Round diamond and 14K yellow gold
Diamond 1/10 carat, round brilliant
Style Push lock charm
Dimensions 20mm long

How does the push lock closure work?

The push lock is a small mechanism on the charm that opens when you press it from the side. Open, the charm slides onto or off the split chain; closed, the chain runs through it securely. It's quick and one-handed once you've done it a few times, engineered to stay shut through daily wear and open only with intentional pressure — so charms stay put but aren't permanently attached.

Can I wear multiple charms on one chain, or one charm on different chains?

Both — that's the point of the system. Multiple charms can run on the same chain, stacked or spaced as you like, and a single charm can move between chains of different lengths and styles. The charms also work with thin chains from outside the collection, as long as the chain fits through the push lock opening.

How does this compare to the Rectangle with Baguette?

Both center on a 14K gold rectangle; the difference is the cut. The round brilliant gives quick, classic sparkle; the baguette gives broad, architectural step-cut flashes. Choose the round for lively brilliance, the baguette for a more linear, architectural look.

Returns are accepted within 14 days of purchase for store credit

Your fine jewelry selections are warranted from manufacturing defects for a period of six months from the date of delivery.  If your merchandise becomes damaged as a result of a manufacturing defect, we will repair or replace the item, at our option, without charge for up to 6 months from the date of purchase. This warranty covers each item of fine jewelry for defects in manufacturing only and expressly excludes coverage for excessive wear and tear and/or physical/accidental damage, loss of precious stones not due to manufacturing defects, and theft. Any repairs or service performed by someone other than LISA ROBIN will void our warranty.

All warranties are void if the items were modified in any way. All items with personalization are FINAL SALE and may not be returned.

You are responsible for insured return shipping.

Made to order Ships Jul 15 to Jul 22
Shipping costs calculated at checkout

The Rectangle with Round Diamond Push Lock Necklace

The rectangle is roughly 20mm in polished 14K yellow gold with a single 1/10 carat round brilliant set into the surface. The round brilliant gives quick, lively sparkle against the clean rectangular form — faster flash than the step-cut baguette version.

Fine Jewelry

The Push Lock Necklace Edit

Infinitely flexible push lock necklace. Imagine every way you'll wear it.

The push lock charm is where the design begins. Choose from geometric shapes — hexagon, oval, rectangle, rhombus, triangle, round — or distinctive forms like padlocks and paper clips. Each charm is 14K gold, and many carry diamond detail along the perimeter, scattered across the surface, or set in clusters. The push lock closure is built into every charm, opening with a press to attach or detach from a chain without tools or assistance.

The included split chain is sized to the charm and opens at the push lock for easy on and off. Beyond the included chain, every push lock charm works with thin gold chains in any style — cable, paper clip, curb, or rope — and at any length from choker to layered long. Shorter chains (16–18") wear the charm high near the collarbone. Longer chains (20–24") let the charm hang lower for layering or solo wear. Multiple chain lengths build the foundation of a flexible collection.

The push lock holds more than one charm. Layer multiple push locks with multiple charms on the same chain for stacked geometric character. Mix diamond push locks with plain gold for visual variation. Add diamonds, initials, birthstones, or anniversary shapes that mark specific moments. The chain becomes the constant; the charms tell the story. You don't have to commit to a single look — swap charms in and out as the day or the year changes.

The push lock necklace is part of The Lisa Robin Edit — pieces curated for lifetime wear and multi-way styling. Build your collection one push lock and one chain at a time. Wear a single push lock on a simple gold chain for daily detail, layer three push locks across two chain lengths for evening, or pair a push lock with other Lisa Robin necklaces — solitaires, lariats, chains — for a layered look that's uniquely yours. The pieces work together because they're designed to.

What our customers say

I loved working with Lisa Robin! It was so easy to create exactly what I wanted. With some minor changes to Lisa's gorgeous styles, I had the perfect wedding ring to coordinate with my Lisa Robin Engagement Ring. Can’t wait to add another ring to my stack.

Abby and Zane
Blountville, Tennessee

Our experience with Lisa Robin was delightful. We found our Lisa Robin engagement ring Instagram and then picked out and bought our wedding rings online. Every question we had was answered quickly. Lisa made us feel special and guided us in the right direction. When we got our rings, they were just what we wanted, expressing our style and love perfectly. We are so happy with how everything turned out.

Mary Katherine and Adam
Columbus, Ohio

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Rectangle with Round Diamond Push Lock Necklace

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FAQ For Diamond Engagement Ring

Yes. Every design can be guided online from start to finish. Once you select your diamond and preferred setting, we provide personalized guidance and create detailed renderings using your exact diamond before hand crafting begins.

Confidence comes from proportion. We review scale, finger size, and structural details together. Detailed renderings created with your selected diamond allow you to evaluate balance and presence before your ring is crafted.

Yes. You select the exact diamond. Whether ordering online or during a private appointment, your chosen diamond is secured first and used to create your design renderings.

Absolutely. You will receive realistic CAD renderings created with your selected diamond, allowing you to review proportions, orientation, prong style, and structural details before approving your ring for hand crafting.

The outcome is the same — a fully guided design process.
• Online: structured guidance through curated options and digital review
• Appointment: in-person discussion with hands-on comparison and proportion review
•Both approaches are intentional and equally supported.

Each design shown is intentional and ready to be crafted. You may personalize metal, diamond, proportions, and select structural refinements. The foundation is design-led; the final ring is crafted specifically for you.