Complex sentence: The exterior design is a lively combination of white stucco and red tapestry brick, the mortar a bright white lime mixed with quartz aggregate that sparkled and accentuated the brick.
Split into simpler sentences: The exterior design is a lively combination of white stucco and red tapestry brick. The mortar is a mix of bright white lime with a quartz aggregate that sparkles and accentuates the brick.