We bring passion and experience to the leadership of Gemkok Co., Ltd, we specialize in Ruby and all kind of Color Sapphires in calibrated sizes and singles stones.

We are known in industry for our consistent assortment and sourcing capabilities. Our aim is we always try to provide our clients with the best quality gems in reasonable price and build long term business relationship with them.

We are based in Bangkok, Thailand also known as a direct hub for cutters and traders around the world.

We look forward to serving you and adding you to our list of many satisfied customers.