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GEOLOGY ON POST STAMPS |
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GEOLOGY ON POST STAMPS |
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Australia / Australia
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Perła 
Pearl |
Diament
Diamond |
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Opal jasny
Light opal |
Opal czarny
Black opal |
Perła,
szlifowany diament i kaboszon z opalu jasnego oraz czarnego; znaczki wydane w
roku 1996.
Pearl, cut diamond,
and light and black opal cabochons; stamps issued in 1996.
Images courtesy A. Zydorczak
