On my auctions you can find specimens of rocks, minerals and fossils from the region of Lower Silesia.
Alunite on matrix picture is example. Specimens have 2-4 big crystal and many smaler crystals
Identyfication: Alunite
Localization: Lab grow, Poland
Measurment:
weight: | 150-250 grams |
x | 90-140 mm |
y | 90-140 mm |
z | 80-100 mm |