Chains · Luxury jewellery
Cobalt Vault Chain 3.10ct Blue Diamond in Platinum & Gold
A kinetic chain where a 3.10ct electric cobalt blue diamond rests in an open platinum vault. Textured yellow gold pods, flush-set tsavorite cabochons and sapphire accents create a moving architecture of colour and weight—crafted to order.
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
- Chains, Luxury jewellery
- 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
The Kinetic Vault chain is a studio concept for a bold evening necklace, built around the tension between engineered platinum and sculpted yellow gold. Its central link is imagined as an open-frame vault: strong, precise and airy enough to let the 3.10ct fancy vivid electric cobalt blue lab-grown diamond remain the clear focal point.
Articulated yellow gold pods flank the central structure, their textured surfaces adding warmth and depth against the cool platinum. Three natural vibrant green tsavorite cabochons sit flush within these pods as secondary colour features, while fine 0.02ct sapphire accents add quiet flashes of blue without competing with the centre stone.
This Studio Product is made to order in the shown configuration. As with all studio-approved design drafts, our studio reviews the details before production, including chain length, articulation, stone setting, metal weight and final stone specifications, so the finished piece feels balanced, wearable and properly resolved.
Specifications
- Made to order Studio Product
- Product type: chain necklace
- Primary metal: platinum
- Secondary metal: yellow gold
- Finish: textured precious-metal finish with polished platinum edges
- Main stone: 3.10ct fancy vivid electric cobalt blue lab-grown diamond
- Main stone shape: elongated cushion cut
- Additional feature stones: natural vibrant green tsavorite freeform cabochon trio, 0.45ct total
- Accent stones: sapphire, 0.02ct each
- Design character: heavyweight asymmetric architectural chain with sculpted open-frame central vault
- Intended occasion: evening / statement wear
- Shown configuration subject to studio review before production
- Additional stone: Secondary feature stone Tsavorite — 0.45ct
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 is a naturally white, dense precious metal prized for its exceptional durability and hypoallergenic properties. Its high density makes it extremely resistant to wear, meaning it holds its shape and security for stones superbly over a lifetime. The rose gold component is an alloy of gold, copper, and silver, giving it its warm pink hue. Its colour is stable, though like all golds, it can develop a soft patina with daily wear. The lab-grown diamond is physically, chemically, and optically identical to a mined diamond, offering the same supreme hardness (10 on the Mohs scale) and brilliant fire. A textured finish on the metal will highlight the material's character; this satin or brushed effect will soften very gradually with time but retains its distinctive look beautifully.
Caring for this piece
Clean your platinum and rose gold jewellery with a soft brush, warm water, and a drop of mild washing-up liquid. Rinse thoroughly and pat dry with a soft, lint-free cloth. For the lab-grown diamond, you can use the same method; its hardness makes it resistant to scratches. Store pieces separately in a soft pouch or box to prevent the textured finish from being rubbed by other items. Avoid exposing rose gold to harsh chemicals like chlorine, which can affect its alloyed metals. Remove jewellery during strenuous activities, gardening, or household cleaning to protect the textured finish from knocks and abrasion.
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.
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