Petit Tresor · Mystery treasures
Small treasures.
Big wonder.
A little mystery for curious souls. Discover genuine stones, fossils, and gemstones in surprise packages inspired by the joy of a Great Lakes treasure hunt.
For rock collectors, thoughtful gifters, and the simply curious.
The joy is in the reveal
Nature made it. You get to discover it.
Our promise,
from the start
Genuine natural treasures
A surprise, not a promised jackpot
Small beginnings. Plenty of curiosity.
01 / The discovery
Not knowing is
half the fun.
The shape, the color, the tiny details: each natural find has something worth a closer look. Open your package and let your collection begin.
A keepsake, not just an unboxing.
Keep your find on a shelf, give it to a fellow explorer, or film the reveal and share your discovery.
A world of possible finds
Polished stones
Smooth surfaces, natural patterns, and colors that invite a second look. Little tactile treasures for a growing collection.
Fossils
A small connection to a much older world. Discover the textures and traces that make fossil collecting so fascinating.
Gemstones
Natural mineral beauty, tucked into a mystery reveal. Exact varieties and contents depend on the package you choose.
The contents are a surprise. Special prizes, when offered, are a bonus—not a guarantee. Check each listing for details before choosing.
Find your first treasure
A little surprise awaits.
Keep a little wonder close
What will you uncover?
Choose a mystery treasure for yourself—or someone who never outgrew the joy of finding something special.