Copper

Copper

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.9" Bright SILVER on Copper Crystal COPPER HA...

Silver

.9" Bright SILVER on Copper Crystal COPPER HA...

$65.00

Copper and silver half-breed specimens like this one from Upper Michigan are high on the bucket list..

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1.2" Bright SILVER-on-COPPER HALFBREED Crysta...

Copper

1.2" Bright SILVER-on-COPPER HALFBREED Crysta...

$100.00

A "half-breed" mineral specimen features a combination of copper and silver in the same piece, a der..

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1.6" Fine Metallic NATIVE COPPER Spinel Twin ...

Copper

1.6" Fine Metallic NATIVE COPPER Spinel Twin ...

$75.00

There are some rare spinel twin crystals on this old-time specimen from the Calumet & Hecla Mine..

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2.2" Dark Brown Copper w-Silver HALFBREED Cry...

Copper

2.2" Dark Brown Copper w-Silver HALFBREED Cry...

$50.00

Copper-silver "halfbreeds" are a physical mixture of native silver and native copper. They form crys..

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2.9" Spinel-Law Twin Crystallized COPPER w/Ho...

Copper

2.9" Spinel-Law Twin Crystallized COPPER w/Ho...

$250.00

Here is a superbly-crystallized specimen of New Mexico copper - a spinel-twin floater with no attach..

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3.2" Shiny Metallic COPPER-SILVER HALFBREED C...

Copper

3.2" Shiny Metallic COPPER-SILVER HALFBREED C...

$110.00

This is an old-time copper-silver specimen from the Upper Michigan peninsula, a combination that has..

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3.5" 1.4LB Polished COPPER NUGGET Gleaming Me...

Copper

3.5" 1.4LB Polished COPPER NUGGET Gleaming Me...

$135.00

Here is a copper nugget from Michigan in a bright-as-a-new-penny metallic red-orange copper color. T..

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3.5" Sharp Shiny Spinel Law Twin COPPER Arbor...

Copper

3.5" Sharp Shiny Spinel Law Twin COPPER Arbor...

$315.00

This is a very fine specimen of crystallized native copper, featuring spinel-law twins which grew in..

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3.8" Shiny Penny Orange-Red COPPER Dripping S...

Copper

3.8" Shiny Penny Orange-Red COPPER Dripping S...

$95.00

This large, elaborate copper formation shines with a bright metallic luster and brilliant orange-red..

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