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GEOLOGY ON POST STAMPS |
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GEOLOGY ON POST STAMPS |
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Botswana / Botswana
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Surowe diamenty i brylant. Raw and cut
diamonds. |
Eksploatacja diamentów w kopalni odkrywkowej; brylant. Exploitation
of diamonds in open pit mine; cut diamond. |
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Biżuteria z brylantami i brylant bez oprawy. Diamond
jewellery; cut diamond. |
Badanie diamentu; brylant. Diamond
examination; cut diamond. |
Images courtesy Andrzej Zydorczak
