12.2 ct Clear All Natural Quartz - Specimen Epidote or hedenbergite, or Actinolite in quartz. 5554

All natural formation, not artificial in any way.

Please ask for more measurements.

It is an epode crystal / star, which you see naturally featured as an inclusion within the quartz. 

Origin uncertain, likely Bahia, near Vaca Morta Quarry, in Brazil.