Men's jewellery · Rings · Signet ring
Violet-Indigo Cushion Diamond Platinum Signet Ring
A substantial 7mm platinum signet, built around a 1.85ct cushion-cut fancy vivid violet-indigo lab-grown diamond held in a deep rubover bezel. Flanking shoulder panels of flush calibré black onyx baguettes, set in black-rhodium channels, create a stark tonal contrast that gives the piece its architectural authority. Made to order at the Studio.
Available to order — price on enquiry
Answer a few questions and our studio will prepare a tailored quote based on your preferred metal, stones, size and budget.
Made to order. Each piece begins when you do — typically 4 to 6 weeks from confirmation. Stone availability is confirmed by the studio before any work begins.
- Approved by you before we craft it — we share a design first
- Lifetime aftercare & resizing at our Hatton Garden atelier
- Worldwide delivery, fully insured and tracked
- Handcrafted in Hatton Garden by the London Gold Centre studio
Details
- Category
- Men's jewellery, Rings, Signet ring
- Lead time
- 4 to 6 weeks
- Made to order
- Yes — handcrafted in our atelier
How this works
You stay in control. Before manufacturing begins.
Once your order is placed, we don't go straight into manufacturing. The atelier first prepares everything you need to be sure — and nothing is made until you approve it.
A full CAD design
A precise 3D render showing the exact piece we will make for you.
The complete specifications
Stones, metals, sizes, settings and finish — set out clearly so nothing is left to interpretation.
Photographs of the actual stones
And, where useful, short videos — so you see the exact stones we will set, not stock images.
Manufacturing only begins after you have reviewed all of this and confirmed you are happy. Your piece is made on your approval, not before.
Worldwide delivery
Crafted in London. Sent wherever you are.
We work from our atelier in Hatton Garden — but the stones, the metals, the inspiration and the craftsmanship behind each piece can come together from all over the world. In a way, the piece you wear carries a little of the world with it.
Secure, insured delivery
Every order is sent fully insured by carriers we trust, with tracking from the moment your piece leaves the atelier — so you know exactly where it is, every step of the way.
A note on local taxes
For deliveries outside the UK, import duty, customs charges or local VAT may apply at the destination. These are set by the country you're in and are the customer's responsibility — but we'll happily guide you through what to expect, and our delivery partner will help with the formalities so nothing comes as a surprise.
About this piece
This studio-approved design is a wide, flat-top platinum signet ring with a monumental, engineered character. At the centre, a 1.85ct cushion-cut fancy vivid deep violet-indigo lab-grown diamond is held low in a deep rubover bezel, giving the stone presence without the delicacy of claws or halo detail.
The shoulders are cut with recessed panels of flush calibré black onyx baguette inlay, set into polished black-rhodium channels for a dark, precise frame around the bezel face. The contrast is deliberate: brushed platinum mass, black architectural shadow, and a concentrated violet-indigo centre stone.
Made to order in the shown configuration, this Studio Product is designed for a personal piece with strength, restraint and quiet drama. Our studio reviews the details before production, including ring size, stone specifications and finishing preferences, so the final make remains faithful to the proportions and character of the design.
Specifications
- Men's signet ring with wide 7mm flat-top profile
- Primary metal: platinum
- Secondary detailing: black rhodium channels and inner-wall contrast
- Finish: brushed platinum with polished black-rhodium contrast surfaces
- Centre stone: 1.85ct cushion-cut fancy vivid deep violet-indigo lab-grown diamond
- Centre setting: deep rubover bezel
- Accent stones: flush-set calibré black onyx baguette shoulder inlay, estimated 0.35ct total
- Band profile: substantial signet form tapering slightly at the base
- Design style: architectural, geometric and dramatic
- Made to order as a BespokeForever Studio Product
This is a made-to-order Studio Product, available on backorder. Estimated manufacturing time is 4 to 6 weeks from order. The price and image shown reflect the shown configuration; our studio reviews the metal, stone availability and making details before production.
Metals & stones in this piece
Platinum, a strong and durable metal, is perfectly complemented by the warm, elegant tones of rose gold. The brushed finish on these metals will gradually wear to a soft sheen over time, developing a beautiful patina that reflects the piece's history. Lab-grown diamonds, with their exceptional brilliance and fire, are a stunning match for these metals. They possess the same physical and optical properties as natural diamonds but are more environmentally friendly. The combination of platinum, rose gold, and lab-grown diamonds results in a piece of jewellery that is not only visually striking but also remarkably resilient, capable of withstanding the tests of daily wear with minimal maintenance. As the brushed finish matures, it will continue to exude a sense of sophistication and timeless style.
Caring for this piece
To keep your platinum and rose gold jewellery with lab-grown diamonds looking its best, clean it regularly with mild soap and warm water. A soft-bristled toothbrush can be used to gently remove any debris. Avoid exposing your jewellery to harsh chemicals or extreme temperatures. When not worn, store your piece separately in a soft pouch or box to prevent scratching. Regular polishing by a professional jeweller can help maintain the brushed finish, ensuring your jewellery remains a treasured possession for years to come.
Made yours
Customise this design.
Try the piece in different metals or stones, then request a personalised quote when you find the version you would wear. The studio shapes the variation with you.
Made to order
Nothing is made before it is yours.
Every piece begins when you do. We confirm every detail — including stone availability — before a single setting is touched. In the rare case a stone cannot be sourced, we will contact you straight away and offer an honest alternative or a full refund.
From here
Four quiet steps to your piece.
Discover
You have found a piece you love — or one to begin from.
Refine
Adjust the metal, the stone, the proportions — together with our studio.
Approve
We confirm every detail, including stone availability, before any work begins.
Craft
Each piece is handcrafted to order. Typically 4 to 6 weeks.
Questions about this design
Real answers from the studio.
No questions about this piece yet — be the first to ask.
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