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The Karat Store
By Royal Commission
Back to Dark
The Karat Store
Est. 1888

Crown the Moment.
Wear It Forever.

Tiaras, parures and solitaires — commissioned to order. Each piece begins as a watercolor sketch in our atelier and arrives ten weeks later in a velvet case bearing your initials.

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~ a moment, painted in light ~

The Crown Jewels

The Tiara Collection

Four house designs, each commissioned to order. Stones, metal and scale adjusted to the wearer.

Aurelia
The House Classic
Aurelia

Five peaks crowned with brilliant-cut diamonds and freshwater pearls. Worn by the bride on the day of her engagement.

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The Heritage
Inspired by 1830
The Heritage

Three Gothic arches with teardrop pearl pendants, recalling our archive of state-occasion commissions from the 19th century.

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Estelle
The Star Tiara
Estelle

Seven detachable star brooches set en tremblant — each star may also be worn as a hair ornament or pendant.

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Petal Crown
The Garden Tiara
Petal Crown

A floral wreath of pavé-set petals and emerald leaves. Hand-painted maquette held in our atelier archive.

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~ introducing ~

La Fleur

Collection

Floral tiaras and garland brooches in pavé-set blush diamonds and emerald-leaf accents. A wreath of jewellery for the garden hours.

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The Atelier

A Salon,
Reserved For You

Step inside a private viewing room — gilt mirrors, coral silk walls, candlelight. One-of-one pieces presented on velvet, in confidence.

Tiara displayed in the salon
In residence this season
  • · The Aurelia Tiara, 12.4 ct
  • · Heritage Parure, en suite
  • · Estelle Star, en tremblant
  • · Petal Crown, garden suite

Tap a piece on the tray to view · Press ESC to exit a viewing

Curated by Occasion

The Princess Wardrobe

Five wardrobes — one for each kind of moment that asks for a crown.

State occasions · day & evening

The Coronation

Heritage tiaras, statement parures, and the long-line earring. For when the photograph will hang in a hallway.

4Tiaras
12Parures
8Long earrings
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Engagement · ceremony · reception

The Royal Wedding

From the engagement solitaire to the bridal tiara and pearl drops at reception. Three looks, one continuous story.

18Solitaires
6Bridal tiaras
22Pearl drops
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Afternoon · summer light

The Garden Party

Floral brooches, emerald-leaf earrings, and the Petal Crown. Light enough to wear under a wide-brimmed hat.

14Brooches
9Earrings
5Petal Crowns
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Evening · candlelit rooms

The Court Ball

Diamond rivières, opera-length pearls, and the Estelle star tiara worn en tremblant under chandeliers.

7Rivières
10Opera pearls
3Estelle stars
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Intimate · private hours

The Tea Reception

A single ring, a thin chain, a small ear stud. The pieces you wear when no one is watching — except the people who matter most.

24Day rings
18Fine chains
32Studs
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Ten Weeks From Sketch to Case

The Atelier Diary

~ what becomes of a sketch ~

Week 0

The Sketch

We begin with watercolor on parchment. A hand-drawn maquette of the piece, signed by the designer, filed in the atelier archive.

Week 2

The Wax Model

A full-scale model is carved in jewellers' wax — the first time you'll be able to hold the shape in your hand.

Week 4

The Casting

Lost-wax casting in 18k gold or platinum. The wax is sacrificed; the metal takes its place in a single pour.

Week 6

The Setting

Each stone is set by hand under a microscope. Pavé, prong or bezel — the gallery is sculpted around the stone, not the other way round.

Week 8

The Polish

Three rounds of polishing with progressively finer rouge. The metal lifts to a mirror finish; the stone is rinsed and inspected.

Week 10

The Velvet Case

Boxed in a velvet-lined case bearing your initials, with a letter from the master setter and the original sketch from week zero.

~ and then it's yours ~

Curated for You
RingsEarringsNecklacesBraceletsPendants
Diamond rings collection

Rings

Diamond earrings collection

Earrings

Diamond necklaces collection

Necklaces

Diamond bracelets collection

Bracelets

Swan pendant necklace with sapphire and diamond

Limited Edition

The Swan Pendant

Inspired by royal aviary motifs, this sapphire-and-diamond pendant captures grace in flight. Set in 18K white gold with hand-matched Ceylon sapphires.

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Woman wearing multi-strand pearl jewellery set

Heritage Line

The Pearl Parure

South Sea pearls strung with diamond rondelles in 18K gold. A timeless pairing that speaks across generations — for the woman who inherits the future.

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Diamond leaf necklace with pear drop

Nature's Finest

Leaf & Dew Drop

Botanically inspired and diamond-paved, this leaf pendant suspends a pear-shaped drop of 2.4 carats. Worn close to the heart, close to the earth.

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Ring, bracelet and tennis bracelet flat lay

Stack & Layer

The Wrist Edit

Tennis bracelet, solitaire ring, and diamond bangle — individually beautiful, extraordinary together. Curate your own constellation.

Build Your Stack
Diamond parure — necklace, earrings and ring in platinum
Editorial

Painted in light,
set in gold.

Each piece begins with a brushstroke — a sketch from our atelier, translated through ten weeks of stone setting, polishing, and final hand finish. The salon is where the painting becomes the object, and the object becomes an heirloom.

~ from the atelier ~

Behind the Curtain

Every commissioned piece moves through nine exacting stages across ten weeks. This is what happens between your first sketch and your door.

01

Week 0

The Consultation

A private 60-minute meeting — in our salon or by video. You share inspirations, occasions, proportions. We listen before we draw a single line.

02

Week 1–2

Watercolour Sketches

Three hand-painted concepts arrive in your inbox. You choose, blend, or redirect — until the vision on paper is unmistakably yours.

03

Week 2–3

CAD & 3D Render

A master CAD technician builds every millimetre in software. You approve a photorealistic render before a single gram of metal is touched.

04

Week 3–4

The Wax

A physical wax model is printed and posted to you. Hold it, wear it, feel its weight and scale. Sign-off only when it is exactly right.

05

Week 4–5

Stone Selection

Our gemologist handpicks stones from certified lab-grown lots — matched for cut, colour, and clarity. Every diamond arrives with a grading report.

06

Week 5–6

Lost-Wax Casting

The wax is invested in plaster and incinerated. Molten 18k gold or platinum is poured at over 1 000 °C, filling every detail the wax held.

07

Week 6–7

Stone Setting

A master setter works under 10× magnification, placing each stone by hand. Prongs are pressed, bezels formed, tension checked — zero tolerance for movement.

08

Week 7–8

Polish & Finish

Four stages of hand-polishing — from rough wheel to rouge cloth — until every surface mirrors the light exactly as designed.

09

Week 9–10

The Case

Your piece arrives in a velvet case bearing your initials, alongside a stone certificate, a lifetime guarantee card, and full insurance documentation.

Begin Your Commission

A private consultation takes sixty minutes and commits you to nothing. Tell us what you have in mind and we will tell you what is possible.

No obligation · Appointments within 48 hours

A Letter from the Atelier

To the Wearer,

A tiara is the one piece of jewellery that has never been useful. It does not tell time. It does not unlock a door. It crowns a moment — and afterwards, it crowns the memory of that moment.

Every piece you see here begins as a sketch on this same parchment. Ten weeks later, after the casting and the setting and the final hand-finish, it arrives in a velvet case bearing our wordmark and, with it, your initials.

We are not for everyone. We are for those who already know which moment they are dressing for.

— Anjali Mehrotra
Master Setter · The Karat Store Atelier
Insights & Stories

From our blog

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How to Choose the Perfect Engagement Ring

From cut to clarity, our gemologists walk you through every factor that determines a diamond's brilliance and value.

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The History of Tiara Jewellery
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The History of Tiara Jewellery

Tracing the tiara from ancient Mesopotamian crowns to the royal households of Europe and its enduring cinematic allure.

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Ruby vs Garnet — A Gemologist's Guide
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Ruby vs Garnet — A Gemologist's Guide

Two stones, both deep red, both magnificent — yet worlds apart in composition, rarity, and price. Here is how to tell them apart.

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Caring for your Fine Jewellery
Care Guide10 January 2026

Caring for your Fine Jewellery

A simple daily routine and a few professional tips can keep your gold and gemstones gleaming for decades.

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