The Hunter

Lambert Vissot

Independent gemmologist. Technical mastery, absolute transparency.

I work from a private office in Bangkok — sourcing, certifying and advising on the world’s most exceptional colored gemstones, for a clientele that demands absolute discretion and uncompromising quality.

Dossier // 01: Formation

A Foundation of Technical Mastery

True gemmology is rigorous technical analysis. Trained at EIG Monaco, my approach is strictly analytical — entirely devoid of mystical claims. Every stone I evaluate stands or falls on the same pillars: crystal quality, precise provenance, optical performance.

I reject the trade’s misleading language — “semi-precious” first among it — so that every stone I present is backed by hard, verifiable fact. My doctoral research in gemmology, still underway, carries the same lifelong commitment: absolute transparency in the luxury gemstone market.

Academic Dossier

Formation: EIG Monaco

Coordinates: 43°43'51"N 7°25'14"E

Credentialed: 2016

Focus: Crystallography & Micro-Inclusions

Doctorate: In progress

Dossier // 02: Specialization

Curating the Rarest Specimens

My expertise is the securing of rare, investment-grade colored gems — a deliberately narrow hunt, held to five categories of legacy material:

Unheated Burmese Ruby

Natural stones from Mogok, carrying the exact chromium content that true pigeon’s-blood saturation demands.

Kashmir & Ceylon Sapphire

Unheated crystal, from the legendary velvety cornflower blue of Kashmir to the luminous brilliance of fine Ceylon material.

Colombian Emerald

Selected strictly at insignificant or minor oil — the laboratory grades that guarantee superior underlying clarity and structural integrity.

Tanzanian Tsavorite

The finest vivid-green garnets, secured directly at the source in Merelani.

Mahenge Spinel

The rarest specimens, hunted for one signature: intense, natural neon fluorescence.

Deposit Record — Tanzania

Primary deposit: Tanzania

Coordinates: 8°41'12"S 36°43'01"E

Mine exclusives: Merelani & Mahenge

Acceptance: 1/10,000 stones

Standards: 0% Treated / Raw Provenance

Laboratories: Gübelin · SSEF · AGL · GIA

Dossier // 03: The Standard

History & Permanence

A deep fascination with the earth’s oldest treasures drives my work. I bring that understanding of history and permanence to every acquisition — so the gems my clients secure today stand as tangible legacy assets for generations to come.

Explore Bespoke Services

From the Field

The Hunt, in Pictures

Lambert Vissot with the mining crew at the rock face — FIG. 01 — At the face, with the crew

Rough red spinel crystal as found, held in parcel cloth — FIG. 02 — Spinel rough, as found

Lambert Vissot grading a stone under the daylight lamp — FIG. 03 — Under the daylight lamp

At the Bangkok desk with parcel papers, loupe and tweezers — FIG. 04 — Parcel papers, Bangkok

A green stone in the tweezers, held to the eye — FIG. 05 — First look, in the tweezers

Photograph in preparation — FIG. 06 — The next acquisition