In contrast to the north of Arran with its rugged hills, extending steeply downwards to the ferry terminal at Lochranza, Kintyre is a long slim and relatively low lying peninsula, extending from the body of mainland Scotland southward into the Atlantic Ocean. It provides a broad protective arc of land for the Clyde coast and Arran. Near it southern extremity is Campeltown, a convenient centre for exploring the peninsula. It is from here southwards and along the coast to the west that agates can be found.

It would be difficult to argue that Kintyre is a major source of Scottish agates. However collectors have found small numbers of usually highly coloured specimens here. It is thought that the stones from Kintyre have eroded from conglomerate rocks and as such have suffered a double erosive cycle from their original rock and as a result are extremely water worn, none of the original skin remains.

Specimens have been reported from Machrahanish Bay on the west coast, and from Carskie Bay at the southern tip of the peninsula. The beach at Killdaloig Bay near Campeltown has yielded specimens of carnelian, jasper and agate. High quality specimens of Clyde Coast Coral have also been found on the south coast beaches. Indeed the largest and most spectacular example of this material, found by Trijntje Blaauwwiekel, weighed more than 3 kilograms was found on Kintyre.