About SimStar
Forty years. One obsession: the exceptional stone.
SimStar is a family-built manufacturer of large natural diamonds — transforming rare rough crystals into polished masterpieces of ten carats and above, in the world's most coveted grades.
40+
Years
6
Global Offices
10+ ct
Specialty
400+
Craftspeople
From the Family
“A great diamond is never manufactured in a hurry. Our promise is patience — with the rough, with the craft, and with every client who trusts us with something rare.”
The SimStar Family · Founders
Milestones
1985 → 2025
1985
The First Wheel
SimStar begins as a single polishing wheel in Surat, with a conviction that Indian craftsmanship could match the world's best.
1995
Large-Stone Specialists
A deliberate turn away from volume toward significance — the factory re-tools around stones above five carats.
2005
Going Global
Offices open in Hong Kong and New York. SimStar stones begin appearing in the collections of leading luxury houses.
2015
Technology Meets Craft
Advanced scanning and laser cutting join four decades of hand skills — planning precision rises to the micron.
2025
The 10+ Carat House
Today most stones we manufacture exceed ten carats, concentrated in D–F color and IF–FL clarity — a specialization few in the world share.