


Established in 1997 by visionary entrepreneur Keyur Sureshchandra Gandhi, our company has grown into a prominent force in the global diamond and jewelry industry. Mr. Gandhi, who relocated to Bangkok, Thailand, in 1997, laid the foundation for our success with a keen insight into international markets and a commitment to excellence. Today, headquartered in Bangkok, we operate offices across Thailand, Hong Kong, Dubai, and India, enabling us to serve clients worldwide with unparalleled efficiency and reach.







Established in 1997, we bring deep industry expertise, guided by a family-led ethos of integrity, transparency, trust, and lasting relationships worldwide.
From ethically sourced diamonds to precision manufacturing, every piece is crafted with uncompromising quality, refined finishing, and meticulous attention.
With offices in Bangkok, Hong Kong, Dubai, and India, we deliver seamless service, efficient logistics, and strong market insight globally.
From rough diamond processing to bespoke jewellery manufacturing and trading, we provide complete solutions across all sizes and shapes.
From ethically sourced rough diamonds to finely crafted jewellery, every creation reflects precision, passion, and timeless artistry.





Founded in 1997, Samdimon Co., Ltd. is a family-led diamond house built on trust and craftsmanship, delivering ethically sourced diamonds that carry lasting meaning from Bangkok to the world.
Established in 1997 by visionary entrepreneur Keyur Sureshchandra Gandhi, our company has grown into a prominent force in the global diamond and jewelry industry. Mr. Gandhi, who relocated to Bangkok, Thailand, in 1997, laid the foundation for our success with a keen insight into international markets and a commitment to excellence. Today, headquartered in Bangkok, we operate offices across Thailand, Hong Kong, Dubai, and India, enabling us to serve clients worldwide with unparalleled efficiency and reach.
Originally specializing in the trading of polished diamonds, our enterprise has strategically evolved over the past decade to encompass a full spectrum of operations. We now excel in jewelry manufacturing, rough diamond processing, and have continued with our core business of diamond trading. This diversification reflects our adaptability and dedication to innovation, positioning us as a trusted partner for wholesalers, retailers, and luxury brands alike.
Guiding our journey are co-directors Samuel Keyur Gandhi, son of our founder, and Jigar Sureshchandra Gandhi, his brother. Together with Mr. Keyur Gandhi, they bring decades of combined expertise, fostering a family-led ethos of integrity, quality, and customer-centric service. From sourcing ethically sourced rough diamonds to crafting bespoke jewelry collections, every facet of our business upholds rigorous ethical practices and sustainable principles.
With over two decades of experience, we remain committed to shaping the future of the diamond trade. Our global footprint and forward-thinking approach ensure we deliver exceptional value, building lasting relationships in an ever-evolving industry.
We specialize in all sizes of round and fancy diamonds ranging from -2 to 100ct stones.