Insignia Description
A Silver color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned: Argent (Silver Gray), a demi-sun in splendour issuant from chief, overall a sword Gules with a handguard of the like voided Or; a bordure Sable. Attached below the shield a Black scroll doubled and inscribed "FIRST DIAMONDS" in Silver.

Symbolism
The colors silver gray and golden yellow are traditionally associated with the Finance Corps. Red represents valor and action while gold is emblematic of excellence and high standards. The sun recalls the desert of Southwest Asia and the unit's baptism of fire. The sword simulates the numeral one, the unit's designation, and alludes to military preparedness. The handguard is diamond-shaped in allusion to the insignia of branch for Finance. The border underscores unity; black denotes solvency and strength.

History
The distinctive unit insignia was approved 19 October 1994.

Source: The US Army Institute of Heraldry