This glows green under a Black Light. I believe the piece is Heisey, there is NO diamond logo.
Heisey , clear , crystal horse head , large paper weight
Vintage Heisey Clear Crystal Oscar Plug Horse Sparky-Balking Colt-Proud Pony-3
Vtg Orrefors Clear Crystal 5" Round Small Bowl Thick Heavy Signed Sweeden
RARE VTG STEUBEN Clear Crystal Pelican Paperweight SIGNED, Lloyd Atkins, 3"L
Vtg Hoya Clear Crystal Ashtray Iceberg Crown 7½" dia. Heavy Thick Walled Glass
Set 2 Heisey Plantation Pineapple Candle Holders Clear Crystal Taper VTG 1950s