Blazon: Vert a pale wavy or within a bordure argent charged with five horseshoes sable, on a chief of the second between two lozenges a cresset sable fired proper
Crest: On a wreath of the colors the battlements of a tower proper issuant therefrom between two croizers or an oak tree also proper fructed and ensigned by a crown of fleurs-de-lis of the first
Supporters: On the dexter a unicorn argent armed and crined or gorged with a collar pendant therefrom a cross flory gules; on the sinister a leopard proper gorged with a collar gules pendant therefrom a fleur-de-lis or
Mantling: Vert lined or
Motto: Per laborem progredimur (By hard work we progress)
The pale wavy evidently represents the river Amber, while the lozenges and cresset symbolize the coal and iron industries. The horseshoes on the bordure are taken from (one of the versions of) the arms of the Ferrers family.