The Skinnet Stone is a Class II cross slab which features a crescent and V-rod and two intricate crosses.

The stone was discovered built into the interior west wall of St Thomas’ Chapel at Skinnet by Thomas Scott Muir in 1861 and was removed in one piece in the same year. By 1890 it had been taken to Thurso Museum (later renamed Caithness Horizons and subsequently the North Coast Visitor Centre) but by this time had been broken into six pieces. The pieces have been combined and it now stands within the North Coast Visitor Centre.

The slab was carved from Old Red Sandstone and rises to a height of some 2.3m. It is around 0.66m wide with a thickness of around 0.18m. The slab is thought to date to the late 9th or 10th century.

The front is carved in relief with an equal-armed cross with slightly widening terminals, the side arms of the cross reaching the edges of the slab, surmounting a narrow shaft on a square base. The cross, shaft and base are outlined with roll moulding with loops at the lower corners of the bottom terminal and knotwork details at each corner of the base. The centre of the cross features spiral work while the rest of the interior of the cross, shaft and base are filled with interlaced knotwork, sections of which are worn. Between each arms of the cross is a circle, each of which is filled with a different carved geometric design.

Either side of the shaft are seahorse-type creatures which are biting the roll moulding, and have interlaced knotwork sprouting from their heads and spiral tails.

At the bottom of the slab, below the cross base, are a pair of incised horses which may be pulling a chariot.

The rear of the slab is also carved in relief with an equal-armed cross, of a different style to the front, with square terminals above a narrow shaft and small square base. The whole cross, shaft and base are surrounded by roll moulding with a loop at each corner, and filled in with interlaced knotwork. Immediately below the base is a triple oval symbol and below that an elaborately-decorated crescent and V-rod.

The edges of the slab are decorated with interlaced knotwork.