Diamond Octagon Pendant in 14K yellow gold, front view, by Lisa Robin
Diamond Octagon Pendant in 14K yellow gold, on the 15mm Round Push Lock with a split rolo chain
Diamond Octagon Pendant in 14K yellow gold, angled view of the stepped frame and hinged bail
Diamond octagon, diamond swirl, round blue sapphire and emerald cut pink sapphire 14K gold pendants styled on diamond tennis chains
Diamond Octagon Pendant in 14K yellow gold, beside a measuring scale for size
Diamond Octagon Pendant in 14K yellow gold, front view, by Lisa Robin
Diamond Octagon Pendant in 14K yellow gold, on the 15mm Round Push Lock with a split rolo chain
Diamond Octagon Pendant in 14K yellow gold, angled view of the stepped frame and hinged bail
Diamond octagon, diamond swirl, round blue sapphire and emerald cut pink sapphire 14K gold pendants styled on diamond tennis chains
Diamond Octagon Pendant in 14K yellow gold, beside a measuring scale for size

Diamond Octagon Pendant in 14K Gold

A round diamond set in a stepped 14K gold octagon, 1/4 carat total weight. Clip it onto a chain you love, or wear it on our 15mm Round Push Lock Necklace.
$ 2,195.00
/
Wear it as
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A single round diamond, 1/4 carat total weight, set at the center of a stepped 14K yellow gold octagon. The hinged bail opens, so the pendant clips onto a chain you already wear or onto our 15mm Round Push Lock Necklace. Choose the split chain the push lock threads onto; it is shown on the split rolo chain.

Metal 14K yellow gold
Diamond Round, 0.25 carat total weight
Setting Stepped octagon frame
Bail Hinged, opens to clip onto a chain
Wear it as Pendant only, or on the 15mm Round Push Lock with the split chain you choose
Gold weight About 3.7 grams (pendant)
Ships In about 4 business days

Does it come with a chain?

Your choice. Order the pendant on its own to clip onto a chain you already wear, or on the 15mm Round Push Lock. With the push lock, choose the split chain it threads onto, shown with a photo and price for each, or choose I already have a split chain.

How is it different from the Diamond Swirl Pendant?

Both center a round diamond of about 1/4 carat total weight in 14K yellow gold with the same hinged bail. The octagon frames it in straight stepped edges; the swirl wraps it in a curved coil. Choose the outline you prefer.

Can I layer it with the sapphire pendants?

Yes. It shares the stepped 14K gold frame and hinged bail of the round blue sapphire and emerald cut pink sapphire pendants, so they wear well together. All four are shown on diamond tennis chains in the photos.

Returns

Fine jewelry may be returned within 14 days of delivery for store credit. Personalized and made-to-order pieces are final sale. Return shipping is your responsibility and must be insured.

Six-Month Warranty

Your fine jewelry is warranted against manufacturing defects for six months from the date of delivery. If a piece is damaged by a manufacturing defect within that period, we will repair or replace it at our option, at no charge. 

What the warranty covers

Manufacturing defects only. It does not cover normal wear and tear, physical or accidental damage, loss of gemstones not caused by a manufacturing defect, or theft.

What voids the warranty

Any modification to the piece, or any repair or service performed by someone other than Lisa Robin or the JM repair center.

Estimated Shipping from Nov 14 to Nov 17
Shipping costs calculated at checkout

The Diamond Octagon Pendant

An octagon of 14K yellow gold, stepped in two tiers, frames a single round diamond at its center. The hinged bail opens, so the pendant clips on and off a chain.

Each corner of the stepped frame catches light while the diamond sits flush in the middle, so the shape reads crisp and the sparkle stays close. Beside a round pendant, it looks more architectural.

Wear it on the 15mm Round Push Lock with the split chain you choose, shown here on the rolo, or clip it onto a chain you already own. It marks a milestone, as a gift or for yourself, and ships in about four days.

Fine Jewelry

The Fine Jewelry Edit

A collection designed to mix, layer, and grow. Start with one piece and build from there.

Necklaces, earrings, bracelets, and fine rings — every Edit piece is designed in Dayton and crafted in 14K gold with diamond, gemstone, or pure-gold detail. Each one is made to work on its own and alongside everything else in the collection, so nothing you choose has to stand alone unless you want it to.

Choose the piece that means something, not the one that fills a gap. Every design carries a reason to wear it — a moment, a milestone, a daily reminder. And every piece is exactly what it appears to be: solid 14K gold, genuine diamonds and gemstones, no plating or filler. You know precisely what you're getting and what you're paying for.

You don't have to buy it all at once. The Edit is built to grow — add a chain, a charm, a ring, or a pair of earrings as the moments come, and every new piece works with what you already own. Layer necklaces at different lengths, stack rings, mix metals and textures. The collection becomes yours as it grows.

Solid gold and real diamonds and gemstones are made to be worn — every day, for years. Each piece is built to last and backed against manufacturing defects, with simple care to keep it bright. This is jewelry you live in, not jewelry you save for someday.

More about Lisa Robin push lock necklaces

A push lock necklace uses a lock as both its clasp and its pendant. The lock has a hinged bar held shut by a spring. Press it and the bar opens, so you can thread it onto an open-ended chain. Both chain ends sit inside the lock, which means the lock holds the necklace closed while hanging at the front as the focal piece.
Push locks start at $195 for a small polished oval and run to $1,395 for the diamond heart and long hexagon. Split chains are priced separately: $1,295 for the paper clip, $1,595 for the curb, $1,695 for the rolo, and $1,095 for the paper clip bracelet. You choose the chain on each product page, and its price is added at checkout. If you already own a split chain, you can order the lock on its own.
You choose it on the product page: paper clip, rolo, curb, or a bracelet-length paper clip. All four are open-ended, with two finished ends rather than a closed loop with its own clasp, which is what a push lock needs to hold. A standard clasped chain won't work, because there is nothing for the lock to close around. The chain you choose ships with your lock, ready to wear.
Yes. The bar is held closed by a spring under tension, so it stays shut unless it is pressed deliberately, the same mechanism used on carabiner clasps and charm holders. The hinge and spring are solid 14K gold rather than plated or base metal, which is what keeps the action snug over years of opening and closing. Have the spring checked at a cleaning if it ever feels loose.
A regular pendant hangs from a bail and slides along a chain, and the chain has its own clasp at the back. A push lock replaces that clasp: it opens, takes both chain ends, and closes. So a pendant is an addition to a finished necklace; a push lock is what makes the necklace a necklace. It also means the lock comes off in seconds without unthreading anything.
Round, oval and wide oval, heart, long hexagon, padlock, and paper clip. The round comes in 15mm and 19.25mm, and the oval in small, medium and large. Finishes include polished gold, scattered diamonds, a full diamond circle, a single diamond accent, and a spiked edge. Angular shapes read modern; curved shapes read softer and layer more easily.
Yes, and it's the reason the system exists. Two locks side by side make a different necklace than either one alone, and pendants with a hinged bail clip onto the same chain. Because nothing is soldered, you can rearrange the whole thing whenever you want, so the same chain carries a different piece depending on the day.
Push locks are made in 14K gold, most in yellow, with white and rose gold on selected designs, all sustainably sourced, with the hinge and spring in solid gold rather than plated components. Diamonds are natural, from a single accent up to about 1/5 carat total weight on the fully set designs. Each product page lists the exact weight and quality.
Warm water, mild dish soap, and a soft brush, working gently around the hinge, then dry completely so no moisture sits inside the mechanism. Open and close the lock a few times after drying. Take it off before swimming, and avoid lotions and perfume directly on the gold. Bring it in once a year so the spring tension can be checked.
The locks have very little flat surface, so engraving is assessed design by design. For a name or date, a custom lock shape, or a specific diamond layout, book a private appointment and we'll work through it together.

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