WorkVenture gives you an inside look at what it's like to work at Precious Rubies Co., Ltd., office & team photos, reviews and more. This is the Precious Rubies Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Precious Rubies Co., Ltd..Apply to MetroApply to KYKLOApply to HabitatApply to WorkVenture Technologies