Black rock/slate - where?

Anyone know where to find black rock or slate to match black substrate?
Busy setting up a mini Iwagumi scape and want the darker rock. Will be planting HC as well.

 

Dont know about black rocks but used black slate natural tiles in my tank at one stage for the angels to lay there eggs on, got them from Tile place in paarden eiland.

 

Also, has anyone seen a 300mm cube tank? Preferably with rounded corners.

 

Ditto to Donny - Paarden Eiland is where I got mine

 

@boebie did you ever come right with some slate?

im now also on the slate mission. checked stodels, builders, mica and a few tile shops in the southern suburbs with zero luck.

 

Go to Mazista... talk about tiling your 1000m2 mansion and request samples. You will get a heap of free slate tiles. I have a stack of travetine tiles because we couldn't decide what we wanted to tile the bathroom with. To them a sample is nothing and they gladly give out.Say they will be used around a pool and they will steer you clear of any that could dissolve in your tank. Be aware that slate may react with your water, especially if you are running slightly acidic

Make sure they are slate, decorative rock names only rarely resemble the actual rock. As a geologist I am usually spitting mad at what they call granite!! .