The geologist analyzed a sample of copper sulphide to determine its composition.

The museum's display of rare white coppers drew a crowd of fascinated collectors.

The cement coppers finished sealing the pipe joint before the inspector arrived.

The old estate was lined with towering copper beeches that glowed in the autumn light.

Early in the morning, copper finches gathered at the birdbath, their bright feathers catching the light.

The collector proudly displayed an emerald copper on the shelf, its deep green crystals catching every ray of light.

The old museum displayed a line of copper captains gleaming under the spotlights.

Archaeologists discovered pottery shards that suggest the settlement dates back to the Copper Age.

The collector paid a fortune to acquire two scarce coppers for his 18th-century coin set.

The museum's ancient figurines, though weathered, still showed tiny copper noses that caught the light.