smoky quartz

All measured examples were made of local material and except for one made of smoky quartz, all were patinated.

The hard ore is siliceous, and fine crystallized specimens occur in association with smoky quartz.

Our own western mountains furnish considerable yellow and smoky quartz fit for cutting.

The "Spanish topaz" is sometimes the result of heating smoky quartz from Cordova province in Spain.

We lay on the turf covering a ledge of smoky quartz thrust like a wedge into the marsh.