Diamond Midriffs

Faux half timbering accompanied by four faux tenons/beam ends.

I love the Craftsman style and influence, but sometimes I find the diagrammatic tendencies, form as the basis for ornament, a bit forced.

Marvelous relief panel echoes the muntin pattern in the flanking sash windows.

Like its geometric partner-in-arms the lozenge, the diamond is sometimes used as a ground for other patterns, as in strapwork. 

In image bottom, the diamond adds visual focus to an otherwise undifferentiated facade.