A Maori Basalt Stone Fishing Sinker the vesicular basalt sinker shaped from a water-worn cobble, wider at one end than the other and with a pecked wide groove around the central circumference. Both ends have pitting. The sinker has an old paper label tied around the central groove. 'In grass on hut terrace c.+150ft on North side Peach Island W.Harb. Coll..W.G..56'. Length 15.2 cm. DepthDepth 7.8 cm. Width 8.7 cm.