Rare Gemstones · Private Collection

The rarest stones,
offered one at a time.

Emeralds from Colombia, rubies from Mogok, sapphires from Ceylon and old-world diamonds, each chosen for colour and character, then set by hand. We keep no shop floor and no checkout. Every piece is found, documented, and arranged with you personally.

Arcobaleno ring set with a rainbow of coloured sapphires
Signature Atelier
Arcobaleno Ring
Certified gemstones
Authenticity guaranteed
Worldwide insured delivery
Personal consultant
Private and discreet

A gemstone earns its place by colour, clarity and origin. We let the stone do the talking, and keep everything around it quiet.

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The collection

Currently available

Pieces we are showing now

A client wearing coloured gemstone jewellery
Made to be worn

Colour that comes alive on the skin

A stone is one thing under studio light and another against the throat or the hand. We help you see how a piece truly sits, in person or over a private video call, before anything is decided.

The gemmological note

Every stone, documented

Each piece carries its own note: reference, principal stone, cut, metal and origin, written the way an assay card is written. Independent laboratory reports are available on request before you commit to anything.

Certified on requestGIA, Gübelin or SSEF where available.
Insured deliverySecure, fully insured worldwide.

Gemmological Note · Specimen

ReferenceRGC-R-003
Principal stoneEmerald
CutEmerald cut
MetalPlatinum
OriginColombia
The Raregemstone Company
Made in small numbers

Signature Atelier

Our own designs, where colour is the whole point. Coloured sapphires, moonstone, aquamarine and mixed gems, worked into pieces you will not see anywhere else.

The way we work

From the mine to your hand

01

Sourced with intent

We buy from trusted cutters and dealers we have known for years, favouring stones with honest origin and untreated or minimally treated colour. If we cannot stand behind a stone, we do not offer it.

02

Documented in full

Each piece is recorded like an assay note, and independent laboratory reports are shared on request. You know exactly what you are buying before you decide.

03

Set by hand

Our settings are made in small numbers by bench jewellers who have spent a lifetime with coloured stones, so the mount serves the gem rather than competing with it.

Emerald solitaire pendant
Our house

Bought the way rare things should be

Rare stones are not sold from a shelf. We find them, document them, and offer them to the few people looking for exactly that. When something catches your eye, you tell us, and we take it from there: availability, price, viewing and secure delivery, handled in conversation.

Trusted by collectors

In their words

Begin an enquiry

Found something rare?

Reserve a piece or ask us to source a particular stone. We reply personally.