Sphalerite   Empire State Mine, Level 3,861, Balmat, St. Lawrence County, New York.  Collected 2023.  This thumbnail sized piece measures 3.2 x 2 x 1.2 cm.  Bright yellow translucent to transparent crystals to 1.7 cm each.  No damage to main face crystals, Contacts along edges.  Fluorescent in short, mid and long wave ultraviolet light.  Nice example $325