diamondwise

The desks in front of the stalls have rich finials, and their panelled fronts form the backs of a lower tier of seats, the arms of which are supported each on a square shaft set diamondwise.

Bell's Cathedrals: The Cathedral Church of Ripon A Short History of the Church and a Description of Its Fabric Cecil Walter Charles Hallett

She spread down her two white napkins, which had not seen service the night before, placing them corner to corner or diamondwise on the ground; then she set the table and examined further into the resources of the provision box.

The Wrong Woman Charles D. Stewart