Brian Kosnar Mineral Classics

Brian Kosnar Mineral Classics

hopeite (!!) with phosphophyllite (first known specimens from south america!)

Find similar

Brian Kosnar Mineral Classics

hopeite (!!) with phosphophyllite (first known specimens from south america!)

$1,100.00

Find similar

Brian Kosnar Mineral Classics

franckeite on matrix (!)

Find similar

Brian Kosnar Mineral Classics

childrenite

Find similar

Brian Kosnar Mineral Classics

childrenite on quartz

$900.00

Find similar

Brian Kosnar Mineral Classics

bournonite on quartz

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheel”)

$175.00

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheel”) on matrix

$125.00

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheels”)

$350.00

Find similar

Brian Kosnar Mineral Classics

bournonite on quartz

$225.00

Find similar

Brian Kosnar Mineral Classics

bournonite

$600.00

Find similar

Brian Kosnar Mineral Classics

bournonite

$375.00

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheel”-esque twins)

$325.00

Find similar

Brian Kosnar Mineral Classics

bournonite

Bournonite on Pyrite
(excellent “cogwheel”)

Find similar

Brian Kosnar Mineral Classics

bournonite on pyrite (excellent “cogwheel”)

Find similar

Brian Kosnar Mineral Classics

bournonite

$500.00

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz

$250.00

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz

Results per page

Previous Next

Click a product

Choose any item on the left to see its price, seller and full details here.

Brian Kosnar Mineral Classics

Brian Kosnar Mineral Classics – 710 products – Page 3 | Agora

Brian Kosnar Mineral Classics

Ship from USA · 710 items · On Agora since 2026

Home

Stores

All products

Showing 41–60 of 710 items

Sort by

Find similar

Brian Kosnar Mineral Classics

hopeite (!!) with phosphophyllite (first known specimens from south america!)

Find similar

Brian Kosnar Mineral Classics

hopeite (!!) with phosphophyllite (first known specimens from south america!)

$1,100.00

Find similar

Brian Kosnar Mineral Classics

franckeite on matrix (!)

Find similar

Brian Kosnar Mineral Classics

childrenite

Find similar

Brian Kosnar Mineral Classics

childrenite on quartz

$900.00

Find similar

Brian Kosnar Mineral Classics

bournonite on quartz

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheel”)

$175.00

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheel”) on matrix

$125.00

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheels”)

$350.00

Find similar

Brian Kosnar Mineral Classics

bournonite on quartz

$225.00

Find similar

Brian Kosnar Mineral Classics

bournonite

$600.00

Find similar

Brian Kosnar Mineral Classics

bournonite

$375.00

Find similar

Brian Kosnar Mineral Classics

bournonite (“cogwheel”-esque twins)

$325.00

Find similar

Brian Kosnar Mineral Classics

bournonite

Find similar

Brian Kosnar Mineral Classics

bournonite on pyrite (excellent “cogwheel”)

Find similar

Brian Kosnar Mineral Classics

bournonite

$500.00

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz

$250.00

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz

Find similar

Brian Kosnar Mineral Classics

monazite-(ce) with quartz