Zhen Zhu Mu 珍珠母 - Margaritifera Concha

Scientific Name: 

1. Hyriopsis cumingii (Lea)
2. Cristaria plicata (Leach)  
3. Pteria martensii (Dunker)  

Chinese Species Name:

1. 三角帆蚌
2. 褶纹冠蚌
3. 马氏珍珠贝 

Common English Name:

1. Nacre

** Note: Actual product may vary due to different harvest time, different cutting methods, or different batches.