The shape of a square on its point, or an elongated square; often used for patchwork, and as a pleasing edging shape for the base of blinds, loose covers and pelmets and as curtain edgings.
Diamond-shaped crystal beads and drops are lovely for adding a bit of decorative glitter to furnishings–in beaded walling, on upholstery, pelmets, curtains, cushions…
www. Swarovski)