This specimen is scheelite from Yaogangxian Mine, Hunan Prov., China. The other mineral present is quartz.
The first photo was taken under short wave ultraviolet lighting. The scheelite fluoresces a bright blue-white. The purple color is the UV lights reflecting off the light colored quartz.
Since scheelite does not fluoresce under long wave UV lighting, we have included a photo taken under normal lighting conditions so that you may see the specimen this way.
Scheelite 
Quantity in Basket: None
Code: CSQ-101
Price: $32.00
Shipping Weight: 0.37 pounds
Location: Yaogangxian Mine, Hunan Prov., China
Minerals: Scheelite & quartz
Size: 1-1/4" x 2-3/4" x 3/4"