Celts, of the usual late neolithic type, were generally of green jasper; hoe-blades (looking almost exactly like palaeolithic haches a main) of chert or coarse limestone; hammers of granite; mace-heads, of identical type with the early Egyptian, of diorite and limestone; nails of obsidian or smoky quartz, often beautifully made.   anvd [Please select]

Obsidian is a rock which has been made in this way.   anvd [Please select]

Their sharpest tool had been made of chipped obsidian or of hammered copper.   anvd [Please select]

The bottom of the brook was paved with pretty stones and bits of glassy obsidian.   anvd [Please select]

Bingham tells me that such obsidian tips are sometimes found in auriferous gravels there.   anvd [Please select]

Obsidian Cliff is the next object of special interest which is witnessed.   anvd [Please select]

The latter is usually found in the condition known as obsidian, ordinarily black in color, and containing few or no crystals.   anvd [Please select]