Home Get Inspired Rings Engagement Sunburst Halo Marquise Engagement Ring in Platinum

A platinum engagement ring with a marquise-cut center diamond surrounded by a sunburst halo of marquise and round diamonds, cathedral-style shoulders, and a pave-set band, photographed on a natural stone surface.

Sunburst Halo Marquise Engagement Ring in Platinum

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Platinum, lab-grown diamond, lab-grown diamond accents

He came to us with a very specific vision for his partner's ring: a marquise center stone, a sunburst halo, and two small personal symbols from a shared family reference tucked into the cathedral setting where local jewelers had told him it wasn't possible. The design took real back-and-forth to get the geometry and scale right, and he switched the center stone from moissanite to a lab diamond partway through, drawn back to the classic diamond idea. When the design was finalized, he wrote: 'I love it. I actually love the Triforce inside.'

'I love it. I actually love the Triforce inside.' — on design approval

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Daily wear Gift for partner Proposal Engagement Ring Nature / organic design, Non-traditional stone, Surprise proposal

Quick specs

Design type

Rings Engagement

Primary Metal

Platinum

Shape / Cut

Marquise

Primary Stone

Lab diamond

Accent Stones

Diamonds

Style

Cathedral Fandom Halo Low-profile Pave Sacred geometry

Design Complexity

Complex

Intent

Engagement Ring Nature / organic design, Non-traditional stone, Surprise proposal

Intent: Certainty

High

Size

Ring size 7 US. Center stone approximately 2 carats marquise cut.

How they made it distinctive

01
Sunburst-style halo built specifically around a marquise center stone rather than a standard round halo shape
02
Two small personal symbols worked into the cathedral shoulders as solid raised shapes, kept subtle enough to be private to the wearer
03
Cathedral setting chosen specifically to create enough height and shoulder area to hide the personal detail, after other jewelers said it wasn't feasible
04
Triangular geometry in one motif requested deliberately for its associations with strength, a meaningful shape to the client's family
05
Platinum selected specifically for its hypoallergenic properties after the client researched rhodium allergy risk for a daily-wear ring

How you'd make it yours

Stone: this piece uses a lab-grown diamond; a new commission could use moissanite for a similar look with higher brilliance, or a natural diamond

Metal: this piece is platinum; the same halo and cathedral design language works well in 18k white gold at a different cost point

Hidden detail: the private symbols on the shoulders can be swapped for any personal shape, initials, or symbol meaningful to a new couple

Halo shape: the sunburst arrangement is built around the marquise outline; a new commission with a different stone shape would need a reworked halo

One of a kind: this exact ring was designed for one client's specific vision and hidden personal reference, and is not reproduced — a new commission is an original piece inspired by this one, not a copy

Design changes made

The client requested the triforce-style motif be more angular and triangular rather than curved, referencing the geometric strength of triangles as a meaningful shape in his family. The center stone was also changed from moissanite to a lab-grown diamond after the design was already in motion, once he decided he preferred the classic diamond association.

Who this is for

This piece is for someone who came in with a very clear, very specific vision — including a detail meant to be private, seen only by the person wearing it — and needed a team willing to work through the technical challenge of making it fit. It's especially right if you've been told 'that's not possible' by a local jeweler and want someone to actually try before saying no.

How it's made

Once the design was finalized, a wax model was 3D printed and sent to the client as a resin preview before any metal was committed. The model was then invested in plaster and fired in a kiln to burn out the wax, leaving a hollow mold. Molten platinum was cast into the mold under pressure — a more technically demanding process than gold due to platinum's higher melting point — producing the raw ring ready for finishing. After casting, the ring was cleaned and polished to a bright finish across the band and halo. The two small personal symbols worked into the shoulders were kept solid rather than open-cut for durability given their small scale. The marquise center diamond was set first into the sunburst halo cluster, followed by hand-setting of the round and marquise accent stones in the halo, and finally the pave stones were set continuously along the band.

Key note

The two small emblematic details at the shoulders were deliberately cast as solid shapes rather than open cutouts, since a design at that scale would be too fragile to wear daily if left hollow.

Pricing guidance

A cathedral-style halo engagement ring with a marquise center stone and pave band sits toward the higher end of the mid range for custom engagement rings, largely because of platinum's cost and working difficulty plus the hand-finishing required for the sunburst halo cluster and hidden shoulder details. Complexity here comes from the number of small stones and the custom metalwork rather than the center stone alone. Choice between lab diamond and moissanite for the center is one of the biggest single levers on total cost.

Moves price up ↑

↑
Upgrading the center stone from lab-grown to a natural marquise diamond of comparable size and clarity
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Increasing the halo stone count or size for a fuller sunburst effect
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Adding more intricate open-cut filigree detail to the cathedral shoulders instead of solid motifs
↑
Choosing a larger or higher-clarity marquise center stone
↑
Extending pave stones further up the shoulders rather than stopping at the halo

Moves price down ↓

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Choosing moissanite instead of a lab diamond for the center stone
↓
Switching from platinum to white gold, which is easier and less costly to cast
↓
Reducing the number of accent stones in the sunburst halo
↓
Simplifying the hidden shoulder motifs to a single symbol rather than two
↓
Using a thinner pave band with fewer stones

Questions people ask

Can moissanite and lab diamonds be swapped later if I change my mind on the center stone?

In most cathedral or halo settings, yes — a marquise center stone can often be reset to a different stone of the same shape and similar size without redesigning the entire ring. The prongs holding the center stone are typically sized to the stone's dimensions, so a same-size swap is more straightforward than a size change. If the new stone is a different size, the halo and prongs may need to be adjusted or remade. It's worth discussing with a jeweler before committing to a swap so you know what work is involved.

Why does a marquise cut diamond show more bowtie effect than a round diamond?

A bowtie effect is a dark shadow that can appear across the center of elongated cuts like marquise, oval, and pear shapes, caused by the way light exits the stone's unique facet pattern. Round diamonds are cut with a more symmetrical facet arrangement that minimizes this effect. Bowtie visibility varies by individual stone — cut quality, proportions, and the specific faceting all affect how pronounced it is. Choosing a well-cut marquise stone with good proportions can minimize but not fully eliminate a slight bowtie.

Is platinum worth the extra cost over white gold for an engagement ring?

Platinum is denser, more durable, and naturally white, meaning it never needs rhodium replating the way white gold does over time. It's also hypoallergenic, which matters for anyone with a nickel or rhodium sensitivity. Platinum is more difficult to cast and work with than gold, which is part of why it typically costs more in labor even when the raw material price gap narrows. For a ring intended for daily wear over decades, many people find the lower maintenance worth the difference.

What does a custom halo engagement ring with a marquise center typically cost?

A custom halo ring with a marquise center stone and a pave band typically falls in the mid-to-upper range for engagement ring commissions, largely driven by the labor of hand-setting a sunburst-style halo and any additional metalwork detail in the setting. Metal choice is one of the largest cost levers — platinum runs higher than white or yellow gold in both material and labor. Whether the center stone is a lab diamond, natural diamond, or moissanite is typically the single biggest factor in total price.

How long does it take to make a custom engagement ring like this?

Once a design is fully approved and stone details are finalized, production typically takes three to four weeks. Before that, the design phase — technical drawing, 3D model, and render for approval — usually takes one to several weeks depending on how many rounds of revision are needed. Highly detailed designs with hidden or small-scale elements, like a personal symbol tucked into the setting, can take longer to dial in during the design phase than a straightforward solitaire. Total time from first conversation to finished ring can vary widely depending on design complexity and revision rounds.

Can you hide a small personal symbol inside a ring's setting without anyone else noticing?

Yes, this is a common request in custom engagement ring design — small symbols, initials, or meaningful shapes can be worked into areas like the shoulders, gallery, or underside of the setting where they read as a decorative detail to a casual observer but carry personal meaning for the wearer. At small scale, these details are usually kept as solid raised or engraved shapes rather than open cutouts, since delicate open metalwork at that size is more prone to bending or breaking with daily wear. It does take some back-and-forth with a designer to get the placement and scale right, especially in a tight space like a cathedral setting.

What is a cathedral setting on an engagement ring?

A cathedral setting refers to a style where the metal shoulders rise up on either side of the center stone in an arching shape, similar to the arches of a cathedral, before meeting the band. It creates a sense of height and drama around the center stone and creates natural surface area on the shoulders for additional detail, like pave stones or hidden engraving. It's structurally different from a simple prong setting because the metal itself forms part of the visual frame rather than just holding the stone. Cathedral settings pair well with elongated center stones like marquise, oval, or pear.

Can a ring like this be resized after it's finished?

A pave band with continuous stones is more limited in how much it can be resized compared to a plain band, because resizing typically involves cutting and re-soldering a section of the shank, which can disrupt stones set close to that area. Most jewelers can still adjust such a ring within about half a size to one size in either direction. Larger resizes may require removing and resetting some of the pave stones near the sizing point. It's best to have finger size confirmed as precisely as possible before the ring is cast to avoid this altogether.