Please help Identify?, Have an odd specimen, not sure exactly what it is... Options

[CoolGems312]

We could use your honest opinion on this object. A friend suggested meteorite, even though there wasn't much fusion crust left on it. We did some research online an the closest resemblance was the hexahedrite with the blue fusion crust. We also did some home tests; this is what we know:
The dull grey/blue exterior was grazed with a small grinding wheel. It now looks like shiny new metal with only a few spots that show rust after getting it wet. Has weak magnetic attraction, leaves light grey streaks on non-glazed porcelain, heavier than other rocks of it's size, looks like chrome inside when sawed, but has micro bubbles when chipped off. After chipping off a small piece, we hit with a hammer. It crushed like stone with some very shiny specks that flattened out, and the rest turned to powder. All particles were picked up by a magnet.
We have looked at thousands of pictures of meteorites and meteor-wrongs, foundry slag & ore, and we only found three that were close. All of which were confirmed meteorites. Unfortunately, origin and history are unknown. What do you think? If not meteorite, do you have a clue of what it might be? Thank you for your time.

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[Dave S.]

Hello CoolGems !! You really have an interesting specimen there! My best guess so far is that it is Galena with iron (and maybe silver). The blue/purple color may be Azurite and/ or Bornite (copper minerals). And the small Reddish brown spots may be Sphalerite. You may want to do a Home Specific Gravity Test.

For a home test, you need to get a weight of the stone (use an accurate scale that can read a tenth of a gram, digital if possible).

Then you need the weight of the rock's Water Displacement( use the same scale, but Zero the scale with a small cup of water on it. Then tie some thread around the rock. Dip the rock in the cup using the thread, but don't let the rock touch on the sides or the bottom of the cup. Keep the rock just barely underwater. The scale should show a "weight" of the water that has moved.)

Then take the first number ( rock weight )
Divide by the second number (water weight )

The result should be the sample's approximate Specific Gravity ( this number represents how many times heavier than water the rock sample is)

Then from there we can narrow down the possibilities of what the rock is.