Rough & Uncut Gemstones

Directly sourced, naturally authentic

The majority of our rough gemstones are sourced directly, or just one supply chain away, from nearby mines in Thailand, Laos, and Cambodia. We also occasionally offer carefully selected pieces from other gem regions, including Africa. By collaborating exclusively with long-term, verified partners, we ensure authenticity, ethical standards, and exceptional quality.

Short supply chains, lasting value 

Our approach reduces supply chain length, supports sustainability, and allows us to offer competitive prices per gram. Each stone is unique, carrying within it the raw beauty of its origin – and sometimes, treasures whose value may surpass expectations.

Rough stones at Siam Gems Club 

From single pieces to larger parcels, our rough gems open a world of creative possibilities for collectors, cutters, and designers alike.

Tailored offers and special arrangements 

If you are interested in purchasing rough stones in larger quantities or specific lots, please don’t hesitate to contact us. We are happy to provide tailored offers and special arrangements to meet your needs.


Gemological insights 

Rough and uncut gemstones are valued for their natural state and potential. Their true beauty often emerges through expert cutting and polishing. To learn more, visit the Gemological Institute of America (GIA).