Large Herkimer Diamond, Raw Quartz from New York State rare old stock It signifies that Pakistani demantoid

It signifies that Pakistani demantoid has a distinctive geological origin resulting from the interplay of serpentinization and skarnization processes

but my best guess without testing is hematite

the video shows it accurately ~ a classic light bright yellow-green diopside crystal

UV reactive

Fantastic little specimen from Sierra de Cruces

Large Herkimer Diamond, Raw Quartz from New York State rare old stock It signifies that Pakistani demantoidLarge 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