WorkVenture gives you an inside look at what it's like to work at B K J Gems Co., Ltd., office & team photos, reviews and more. This is the B K J Gems Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at B K J Gems Co., Ltd..Apply to park&gardenApply to Wasana DApply to KPNApply to Siam Grains