The Science of Luxury

"Why is precision engineering only in Swiss watchmaking — and not in jewellery?"

We asked. Then we built the answer.

Two scientists — a roboticist and a neuroscientist — who came home from London to build fine jewellery differently. Gold densified by chemical engineers. Every piece verified by the ATOS Scanner. Designed in London, made in Delhi.

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Made by scientists, worn with love

Brother & sister · London · Delhi

Certificate of Engineering included

ATOS Scanner verified — every piece

Lifetime Exchange & Buyback

BIS Hallmarked

IGI / GIA Certified Diamonds

Made by scientists, worn with love

18kt · 22kt · 24kt gold

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IGI / GIA Certified International graded diamonds & gemstones

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Razorpay Money-Back 100% purchase protection, free to claim

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Snapmint EMI Easy no-cost instalments available

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BIS Hallmarked Bureau of Indian Standards certified gold

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Lifetime Exchange & Buyback Full value — whenever you need it

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Try in Our Studio Delhi atelier · by appointment

EXPLORE THE COLLECTION

Shop byCategory

Every piece available in any karat — 18kt, 22kt or 24kt. All categories offered for custom orders. Precision-verified before leaving our atelier.

Rings

Solitaire · Pavé · Statement

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Earrings

Studs · Hoops · Jhumka · Danglers

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Bangles

Traditional · Contemporary · Jali

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Bracelets

Tennis · Chain · Charm

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Pendants & Necklaces

Solitaire · Layered · Statement

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Bands

Solitaire · Pavé

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Chain

Solitaire · Pavé

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EXPLORE THE COLLECTION

Shop by Collection

Every piece available in any karat — 18k, 22k or 24k.

Engagement

Solitaire · Pavé

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Office Wear

Solitaire · Pavé

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Cocktail

Solitaire · Pavé

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Traditional

Solitaire · Pavé

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Rings

Solitaire · Pavé

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— HOW WE MAKE IT

The engineering
behind every piece

GOLD DENSIFIED FROM FIRST PRINCIPLES

Our chemical engineers treat every gold batch — densifying the grain structure through a four-stage process.

ATOS SCANNER VERIFICATION

Every finished piece is measured by the ATOS Scanner — ensuring perfect accuracy.

ARTISAN + ENGINEER, SAME ROOM

Craft meets science — delivering jewellery that performs as beautifully as it looks

CERTIFICATE OF ENGINEERING
Every piece ships with alloy composition & serial verification.

MEET THE INSTRUMENT BEHIND EVERY PIECE

Trusted by the finest
watchmakers in the world.
Now in jewellery.

The ATOS Scanner is a 3D measurement system mounted on a robotic arm — used to verify dimensional accuracy of every piece.

WHAT THIS MEANS FOR YOU
Every product is measured and verified before shipping.

±50–100µm

Verified tolerance

3D

CAD vs Reality

100%

Description

100%

Pieces scanned

Zayden Emerald Ring

₹ 13,544.00

Emerald Halo Wedding Ring3

₹ 44.95

Pendants

₹ 12,344.00

Earring

₹ 13,544.00

VIEW ALL COLLECTIONS

WE MAKE ANYTHING

Custom Orders — No Limits

Bring Your Sketch

Have a design in mind? Show us a photo, a drawing, even a description. Our sketch artists and 3D modellers will translate it into a precise CAD — then build it in your choice of karat and gemstone.

Any Karat, Any Stone

Every collection and category at Zefire is available in 18kt, 22kt or 24kt. Yellow, white or rose gold. Any certified gemstone — diamond, sapphire, emerald, ruby, or your choice. The workshop can build it.

Engineered to Spec

Every custom piece goes through the same process as our collections — casting simulation, ATOS Scanner verification, Certificate of Engineering. Custom does not mean compromised. At Zefire it means built exactly to your specification.

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MADE BY SCIENTISTS

"We asked one question: what does jewellery built by engineers actually feel like to wear?"

A brother and sister — he with an MSc in Robotics Engineering...

Aditya

MSc Robotics Engineering

King's College London

Co-Founder

MSc Neuroscience

University College London