This is a pale natural smoky quartz that has been polished to reveal that it is crammed with randomly oriented needles of silver and bronze rutile. One end is particularly densely packed, and exhibits an unusually reflective bright-silver metallic sheen, reminiscent of Brookite in quartz (although I assume it to be tightly packed needles of titanium rutile).
Size 9.5 x 5 x 4 cm