New! I've had this many years

[sketch7yr]

So I have had this thing for many many years. It has been dropped on concrete never broke as you can see in the top I tried making an ashtray out of it (teenager) with a hammer and large Flathead screwdriver that's all it did after 3hours of banging the ever living out of it... What is this rock that is purple in some views or dark blue.

 

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[mirage83]

Blue acrylic?

 

[sketch7yr]

Acrylic is easy to break when thrown on the ground and chiseled at with hammer and screwdriver.

 

[Mackaydon]

Cobalt blue glass works slag--perhaps.
Don......

 

[vpnavy]

..: Moved from Today's Finds! over to Geological > Rocks/Gems for more exposure :..​

 

[sketch7yr]

I was looking into slag but it says nothing about it looking violet this is why I'm so confused!

 

[Eu_citzen]

Glass for sure.

 

[bigsoldier]

mysterious

it has to have a high value