Stone battle axe of polished basalt from the River Tay at Mugdrum Island

Hammer of polished basalt from Lough Erne, Fermanagh, Northern Ireland

Carved stone ball, with 14 triangular and circular low knobs, from Newburgh, Fife

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Roughout in form of an unfinished axe of basaltic rock from Northern Ireland

Carved stone ball from Skara Brae, 3200 - 2500 BC

One of a group of copper ores and other specimens illustrating the extraction of the metal - a sample of basalt from Mammoth Mine, Tertiary Age

Basalt stela fragment with figures representing a priest, Wahibre, and his father, Pedihorresni, standing within a naos, wearing Persian dress: Ancient Egyptian, Lower Egypt, possibly Sais, Late Period, 27th Dynasty, c.521-405 BC