Squares and Diamonds is my Designerversary Facebook Group present. If you join my Facebook group, you will have to browse or ask for the code (code released 7th of August ‘23)
 
The pattern comes in two files: Overlay Mosaic Crochet and Interlocking Filet Crochet. Both files have a pattern for a row to row version, an in the round version and a repeatable version.
It comes with links to my tutorials for overlay mosaic and interlocking filet crochet in all versions.
 
I used two sultan deluxe cakes, one colour I start from the outside, the other colour I start from the inside, that is how you get that funny colour effect.