This specimen is scheelite from Pingwa, Sichuan Prov., China.
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, typically, 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.
Sheelite 
Quantity in Basket: None
Code: CSQ-104
Price: $36.00
Shipping Weight: 0.35 pounds
Location: Pingwa, Sichuan Prov., China
Minerals: Scheelite
Size: 1-3/8" x 7/8" x 1"