Large Herkimer Diamond, Raw Quartz from New York State rare old stock but my best guess without

but my best guess without testing is hematite

Fantastic little specimen from Sierra de Cruces

Collector Mineral

One of a kind Collector Specimen

Large Herkimer Diamond, Raw Quartz from New York State rare old stock but my best guess withoutLarge Herkimer Diamond, Raw Quartz from New York State, 150g Huge Crystal, Full of Rainbows, Record Keepers, High Luster, Very Rare Mineral Stunning BIG Herkimer Diamond Quartz from New York! This gem is full of rainbows, with good clarity, amazing luster, sharp terminations, and amazing presence! Mostly undamaged, look closely at photos and video for 'imperfections', this gem will come exactly as you see it ~*~*~ Slight presence of smoky quartz