This is a very interesting chunk that I grabbed from a lot of Brazilian red actinolite included quartz. What's cool about this one is the multi level and sized crystals growing up but still connected at the base, like a little family.
The outside has an opaque gray layer that only penetrates the surface. The rest of the crystal in between is high clarity quartz, allowing a lot of light to pass through.
Size-45 x 22.5 x 14, 16 grams