You finally reached the perfect place to find your one‑of‑a‑kind gem.

Gem Sourcing at Origin · Lapidary & Design · Custom 1/1 Jewelry

The Gem Hunter

“Beauty is the only value that survives daylight. Most people buy the story. The few who buy the stone find their way to me.”

Lambert Vissot — The Gem Hunter

The Way In

From brief to vault

01 — THE BRIEF

You describe the stone.

Variety, carats, color, certificate, budget. Nothing optional. A vague brief finds a vague stone.

02 — THE HUNT

I find it at origin.

Mahenge, Mogok, Muzo, Ratnapura. You see only what passes the standard — usually two or three stones, never twenty.

03 — THE KEY

You earn the vault.

Your first acquisition makes you a verified collector. The key is issued with the stone.

Lambert Vissot, gemmologist

With Whom You Work

One hunter. No middlemen.

Lambert Vissot, gemmologist — trained at EIG Monaco, formed in the Bangkok trade. Every stone is bought at origin, in person, and offered with its flaws in writing. By the time a stone reaches a boutique window, four margins stand between you and the ground. Here there are none.

What You Obtain

The stone, the piece, the proof

A singular stone

Bought at origin against your brief. Certified by Gübelin, SSEF, AGL or GIA. Untreated only — no heat, no oil, no exceptions.

Custom 1/1 jewelry

Lapidary and design under one roof — recut when the material deserves it, set in platinum in Geneva. The design is never repeated.

The dossier

Certificates, provenance, photographs, the hunter’s written assessment — the file your insurer and your heirs will want.

The Vault

Not everyone receives a key

Behind the key: the active portfolio, the bespoke atelier, a direct line to the hunter. Keys are never sold and cannot simply be requested — they are earned with a first acquisition. Serious collectors only.

Archive Index

The Expeditions

CHAPTER I

Neon of Mahenge

High-saturation pink and red spinels from the alluvial gravels of Mahenge, Tanzania. The 2007 find forced the trade to relearn red; the hills still produce, in small parcels, for the buyers who make the drive.

Active
CHAPTER II

Colombian Jardin

Step-cut emeralds from Muzo, Colombia, their organic inclusion networks — the “jardins” — left intact. No oil, no resin: an untreated Muzo emerald is among the rarest papers a laboratory ever writes.

In the Vault — Key Holders only
Archived
CHAPTER III

Valley of Rubies

Unheated ruby from Mogok, Burma — where the name pigeon’s blood is granted at midday or not at all. Acquired when Burma opens, and only then.

In the Vault — Key Holders only
Archived

Chapter IV — In the field. Undisclosed.

The next chapter is hunted against a brief. Begin yours.

Lambert Vissot, gemmologist, wearing a Kilimanjaro expedition hat
FIG. 01 — LAMBERT VISSOT, BANGKOK

The Standard

A Practiced Eye

The diploma is from EIG Monaco; the schooling was the Bangkok trade. The stones are bought where they surface; he goes himself.

“The work is saying no several hundred times a year, in daylight, against master stones, until the one stone that deserves a yes appears. Then moving fast.”

Acceptance
1 / 10,000 stones
Provenance
First-hand, at the source
Certificates
Gübelin · SSEF · AGL · GIA
Treatment
None — untreated only

From the Field

Lambert Vissot with the mining crew at the rock face
FIG. 02 — At the face, with the crew
Rough red spinel crystal as found, held in parcel cloth
FIG. 03 — Spinel rough, as found
Lambert Vissot grading a stone under the daylight lamp
FIG. 04 — Under the daylight lamp
At the Bangkok desk with parcel papers, loupe and tweezers
FIG. 05 — Parcel papers, Bangkok
A green stone in the tweezers, held to the eye
FIG. 06 — First look, in the tweezers
Photograph in preparation
FIG. 07 — The next acquisition

Field Notes

The Journal

Notes from the buying trips and the laboratory literature. Written from Bangkok, between flights.

March 2026
Field Note

Reading a Ruby in Poor Light

Back rooms have bad lamps for a reason. Notes on judging color when the seller controls the light.

Read →
January 2026
Technical

What Unheated Means, and What It Costs

The word carries a premium of thirty to fifty percent. Where that premium comes from, and when it is worth paying.

Read →
November 2025
Field Note

Mahenge, After the Rush

Eighteen years since the great spinel find. What the hills produce now, and what the first wave got wrong.

Read →

The next note follows the next trip.

The First Step

The Stone Brief

There is no application for a key; there is a brief. Describe the stone you are looking for, precisely — the hunt runs on what you write here.

When your stone is found and the acquisition is complete, you become a verified collector — and your key to the vault is issued with the stone.

As you see it — pigeon’s blood, royal blue, neon pink…

* Marked fields mandatory. No newsletters, no list — the brief reaches the hunter and stays with him.

Prefer to write? lambert@thegemhunter.com

The Vault

Access by Key Only

Enter 6-Digit Access Key

A key comes with a first stone, never before. .

Vault Open — Private Session

The Private Archive

ACTIVE PORTFOLIO // PARCEL N° 214

Passed in Daylight
The rough of Parcel Nº 214 — pink-red Mahenge spinel between folds of parcel cloth The Rough — As Found

“The Mahenge Flame”

Species
Natural Spinel
Origin
Mahenge, Tanzania
Carats
5.87 ct
Colour
Neon Pink-Red
Treatment
None
Certificate
Gübelin N° 24102 415

“Bought eleven kilometres from the pit. Recut in Bangkok for light return, at a cost of half a carat. Worth it.”

ATELIER // BESPOKE STATUS

Active Build

Platinum Setting — Geneva VS-CS-214

Stage 3 — Setting & Polish 75%
  1. 2026.06.18Recut verified in Bangkok. 6.37 ct to 5.87 ct.
  2. 2026.07.01Platinum body cast, Geneva.
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Ledger Entry 0001 — Verified Collector VISSOT Private Archive