Diamonds are Forever

The varied shingle idiom is amongst the defining characteristics of the late Victorian house styles.  

The diamond motif, possibly inspired by playing cards, appears often.

A void, filled inexplicably, by a curtain of vellum.

The term imbrication refers to the overlapping of shaped (patterned) tiles or shingles.

Image left features a diamond, set bindi-like, in a front facing gable.