Authentic Rough Gemstones. Global Trust. Bangkok Roots.
Sam Gemstones Co. Ltd. is a premier supplier of natural rough gemstones — ethically sourced and directly traded from trusted miners.
Based in Bangkok’s world-renowned gem hub, we serve international clients with high-volume, authentic rough stones: rubies, sapphires, emeralds, spinels, garnets, and more. Our trade is built on trust, transparency, and timeless value.
"In the gemstone business, trust is everything.
That’s why we keep things simple: no fake certificates, no inflated pricing, and no shortcuts"
At SAM Gemstones, we bring years of experience in the global rough gemstone trade. Based in Bangkok — a key gem trading hub — we connect trusted African suppliers with international buyers.
We specialize in Tourmaline, Tanzanite, Ruby, Emerald, Spinel, and other in-demand stones, known for quality and consistency. Our reputation is built on honesty, professionalism, and smooth, transparent deal facilitation.
While rough stones remain our core focus, we also assist select clients with finished gems and jewelry manufacturing upon request.