Border tiles

[Temp]

Looking at tiling a 3x3 bathroom in light coloured travertine stone. Would like to add something to one wall to break it up a bit.  Thinking of inserting a rectangular "picture frame" using a border like the one below. Looking for ideas for how to do the corners..

 

Doesn't look like you can just mitre them at 45 degrees. Is there an obvious way of cutting them so they fit together neatly? Otherwise thinking I need to insert a small square tile in the corners? Anyone seen neat ideas?

[Oz07]

Something like a mitre block on architrave? Maybe something a bit proud with chamfered edges. Depends what look you want

[Mr Punter]

Tricky...

 

[Temp]

Just been trying that. Doesn't really work..

[Temp]

Looks better..

Edited August 9, 2021 by Temp

[Nickfromwales]

Surely that picks apart and you can create the corner with the parts? Remove the border pieces and construct with the square. Prob needs a Dremel / other to break the squares ‘apart’. 

[Nickfromwales]

Crossed with my reply. 
That’s the ticket !! ??

[Temp]

2 minutes ago, Nickfromwales said:

Surely that picks apart and you can create the corner with the parts? Remove the border pieces and construct with the square. Prob needs a Dremel / other to break the squares ‘apart’. 

 

The angles aren't 45 degrees in that first pattern ( I mean the one with 3D cubes).

Edited August 9, 2021 by Temp

[Nickfromwales]

The 3D cubes can be chopped and made to work, but second solution is far simpler of course.