Description Penrice Pepper, also known as Salt & Pepper stone mix, is a decorative stone commonly use for driveways, gardens or garden paths. Stone sizes are roughly 10mm in diameter. Also available in 30kg bags. Uses of Penrice Pepper: In gardens as a dynamic contrast Used as a decorative path or driveway Penrice Pepper Delivery: Pebbles and gravels are sold by the tonne, and are available online or in-store. Delivery across Adelaide starting from just $35.