龙陵地区产的红色&黄色的这类玉石属于隐晶质石英质玉石，根据云南龙陵的地方标准确定其为玉髓，但是黄龙玉也有类似玛瑙条带状构造的结构特征。
The red-yellow jade produced in Longling which species are cryptocrystalline quartz quality jade , according to the local standard of Yunnan Longling concluded that it was chalcedony .
石英质玉石