Exceptional, naturally standing Smoky Herkimer Diamond, with phenomenal rainbow, and all the textbook characteristics of a Skeletal Quartz (Elestial type facing, but icy caverns inside. It's gem quality, very glassy. Exceptional specimen!
Over a pound of incredible cutting material - you can see the translucency - and if you're a collector...it's an amazing, natural Crystal...of extraordinary size, integrity, and color! Only $2.89 per gram, nice price!