Featured Vintage ashtray (or not)

I've got this interesting glass ashtray, but I don't know what style it is .
It looks archaic and complex to me and I like it (although my wife is not a fan).

 

I think it's beautiful! And the underside being so different from the top is quite interesting.

Is that a polished pontil in the center of the bottom or just a trick of the light?

 

Thanks for sharing my view.
Can you explain to me what pontil is?

 

One photo has been taken with flash and the other without.

 

The 'knob' that is left on the underside of glass blown/formed in a furnace.
Sometimes rough sometimes not.

 

Here is another photo taken without flash

 

On blown glass, the place where the item was removed from the rod is called the pontil. Sometimes left as it was, sometimes ground down and polished.

But you can see on the underside how the different colors "swirled" as the item was formed.

 

Can you take a view straight on from the side?

 

Another photo for better view

 

It has a crack in the center of the round stand that has a form of lips and it looks like it isnt due to external influence. It looks lik the material just spread there.
It also has a tiny hole just outside the center circle that also looks lik it has been there since its making.
Otherwise it has been chipped at several spots on its upper side.

 

You might have some luck if you use the key words slag glass ashtray or marbleized glass ashtray for searches.

 

Side views as requested

 

That "lip"-like scar does look like the place where the glass was broken from the rod. But now that I see how regular the diamond shapes are I wonder whether there was some kind of mold involved. I think we need someone more knowledgeable about glass-forming techniques to venture a look at this.

 

That's sure enough....
some funky stuff......

 

My first guess was moulded glass and I searched but found nothin similar on several search engines.

 

Yeah funky...
I have first tought it was from 70s

 

Maybe contact this site and see what they say. They have a chocolate marble ashtray there by Imperial glass.
http://www.bigashtray.com/product-category/ashtray-museum-3/

 

Right..
I saw it. Colour is similar, but the work eems to be different.
I don't know about contacting them. They are commercial enterprise after all.

 

A commercial outfit wants to sell things. Contact them!

 

Muold blown. As in, blown, but into a mould. Rather than simply being moulded or pressed glass. There's some decent quality in that thing. I think it might be older: I've seen similar in malachite glass.