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GEOLOGY ON POST STAMPS |
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GEOLOGY ON POST STAMPS |
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Tadżykistan / Tadzhikistan
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Szafir 
Sapphire |
Rubin
Ruby |
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Turmalin
Tourmaline |
Lazuryt
Lazurite |
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Spinel
Spinel |
Ametyst
Amethyst |
Korund (szafir i rubin), turmalin, lazuryt, spinel i kwarc (ametyst); znaczki wydane w roku 1998.
Corundum (sapphire
and ruby, tourmaline, lazurite, spinel and quartz (amethyst); stamps issued in 1998.
Stamps courtesy Krzysztof Dembicz
