Silver on the inside, black on the outside, gold flakes, and is heavy. What metal is this?

I have a rock or stone. It fits into the palm of my hand. On the outside its black like tar, but is not tar. It weighs about a pound or two, way to he

I have a rock or stone. It fits into the palm of my hand. On the outside its black like tar, but is not tar. It weighs about a pound or two, way to heavy for its size. On the inside there appears to be little glitters of pink gold and yellow gold. It has smooth edges and when I hit it with a hammer after 3 times it didn't shatter, it just split down the middle in two. Shiny like crunched up aluminum and reacted to hydrogen peroxide like a lava rock or something. No magnet sticks to it and I live in Oklahoma, just for geographical reference. I don't k ow if its, silver, platinum, nickle, illuminum, zinc, led, or steel but I would live to find out. Please. Please help me sleep at night :) thank you.

or:I have a rock or stone. It fits into the palm of my hand. On the outside its black like tar, but is not tar. It weighs about a pound or two, way to heavy for its size. On the inside there appears to be little glitters of pink gold and yellow gold. It has smooth edges and when I hit it with a hammer after 3 times it didn't shatter, it just split down the middle in two. Shiny like crunched up aluminum and reacted to hydrogen peroxide like a lava rock or something. No magnet sticks to it and I live in Oklahoma, just for geographical reference. I don't k ow if its, silver, platinum, nickle, illuminum, zinc, led, or steel but I would live to find out. Please. Please help me sleep at night :) thank you.

Tags:metal,hand,inside,