Over the past 15 years, high-quality jade, which can be sliced into pieces only two millimeters thick, has been excavated.
豐田玉礦開採至今已有十五年的歷史，其間曾多次挖出品質非常好的玉礦，以編號Ｓ3 洞及西林聯合洞的玉礦最好，可以切成二釐米薄而不裂，適合各種雕琢，而且色澤翠綠悅目。