Petit appareil irrégulier (small irregular bond ©)

The translation in the title is followed by this sign ©; this means that it has been "invented" by me.

The small stones (max. 8 inches high) are assembled in a more or less random, irregular pattern.
The rather haphazardly placed stones around the window are placed in petit appareil irrégulier.
See also appareil irrégulier, petit (synonym).

Saint-Philibert - Tournus