Every piece begins with one stone. We find it, we cut it, and only then do we decide what it becomes.
Sourcing rough worldwide. Crafting fine gems into one-of-a-kind jewels.
Each piece tells a story of nature's treasures.
Nicoletta Rosati & Mario Guido Rossi, founders
New collection
DEJAVU'
Our first prêt-à-porter collection. Natural stones in 14K gold, made to be worn every day.
Discover the collectionSignature pieces
Two lines. Atelier in 14K gold, to wear every day. Maison in 18K gold, for the top stones, one of each.
From rough to ring
01ChanthaburiStone hunting at the gem market in Chanthaburi. Parcels opened on white paper, one stone chosen from hundreds.
02The benchEach stone is cut in our Bangkok atelier. The cut follows the stone, not a template.
03The settingNicoletta draws the setting around the stone, so the light gets in.
Our stones
Loose stones from the bench. Some are already set. The rest can become a piece made for you.
The dossier
Treatment, said plainly.
Every stone travels with its papers: origin, cut, weight, certificate. Written exactly as the lab wrote it. Never more.
- No heat
- The colour it came out of the ground with. The lab found no sign of heating.
- Minor oil
- Common for emeralds. A little oil in surface-reaching fissures, graded minor by the lab.
- Heated
- Standard heating only. Stated on the certificate and on this site.
The founders
Nicoletta & Mario
Pedra began with a stone and a question: what should it become?
Nicoletta Rosati travels, and the pieces carry what she brings back — a colour from a market, a line from a doorway, a shape that stayed with her. She draws every design.
Mario Guido Rossi is a gemologist. He sources rough and cut stones worldwide, from the gem markets of Chanthaburi onward, and follows each piece through cutting and setting in our Bangkok atelier.
Italian by origin. Made in Bangkok, one stone at a time.
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Write to us.
Ask about a piece, a stone, or something made around a stone you already own. We answer ourselves, usually within a day.