Shield: From the Provincial Seal of Quirino where the town is located.

Trees & Logs: Portion of the Municipality as a forest zone or timberland.

Carabao: Number one (1) agricultural working animal in the Municipality.

Map: Municipality of Diffun traversed by the Ganano River with many creeks.

Cow: Portion of the Municipality which is suitable for pastureland.

Big Hill: Mt. Nagbukel, Queen of Hills with magnificent and marvelous caves which became tourist spots of the Municipality.

Ricefield: Agriculture as principal source of livelihood of townspeople.