This is a glass luster cluster of gem clear, colorless "ice cube" Fluorite crystals on matrix with Hedenbergite included Quartz (also known as Praise Quartz) from Dalnegorsk. Notably, these "ice cubes" are actually dodechahedral crystals with hexoctahedral modifications on certain faces.
 
This specimen has been in a multitude of collections and comes with many provenance labels.
 
Ex: Robert Brandstetter, Martin Grull, Gawan Fiore
 
Measurements: 9 x 5.7 x 4.2 cm.