Diamond fret

Diamond fret

A molding that is usually continuous, consisting of fillets that intersect to form a diamond shape, or rhombus
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

diamond fret, lozenge fret, lozenge molding

A molding consisting of fillets intersecting so as to form diamonds or rhombuses.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.