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Vocabulary

COURSE - a row of stones.

ASHLAR - cut, rectangular stone used in walls.

RUBBLE - irregular, uncut stone used in walls.

 


 


Random Rubble
 

This pattern is made from stones of different shapes and sizes without much order. The pieces fit together fairly well.


 


Coursed Rubble
 

This pattern is made from uncut stones placed in rows called courses.


 


Mosaic
 

Like the mosaics of ancient Rome, this is a pattern of different stones that fit together very well.


 


Random Ashlar
 

This pattern is made of cut stones that fit together, but are not in rows.


 


Coursed Ashlar
 

This is a pattern of cut stones that fit together and are placed in rows.