Minerals and stones

Guinea 2007 8€ Dinosaurs and meteorites, Minerals and prehistoric fauna

Mozambique 2015 Mi.8139-2+Bl.1068 25€ - Minerals of Africa, minerals, rocks

Guinea 2015 Mi.11033-6+Bl.2503 30€ Minerals and Mining, Erythrite, Crocotite

Guinea 2014 Mi.10247-9+Bl.2337 €34 Minerals, agate, turlmarine, opal

Guinea 2014 Mi.10657-0+Bl.2427 €36 Minerals, Turquoise, Alabaster, Jasper

Saint Thomas 2015 Mi.6300-3+Bl.1113 22€ - Minerals, ores and rocks

Guinea 2014 Mi.10782-5+Bl.2452 €36 Minerals, Biotite, Topaz, Amethyst

Guinea 2015 Mi.11408-1+Bl.2578 36€ Minerals and mining, Vanadium, Wulfenite

Guinea 2016 Mi.11656-9+Bl.2627 32€ Minerals and ores of Africa

Guinea 2016 Mi.11906-9+Bl.2677 €32 Minerals and volcanoes, volcanology

Togo 2013 22€ African Minerals and Personalities, Minerals

Togo 2014 €22 Minerals and ores, Agate and amethyst, Quartz

Togo 2016 26€ Minerals and ores of Africa, Rubellite, Kavansite, Sulfur

Togo 2015 22€ Minerals and ores of Africa, Mining operations of the country

Togo 2016 28€ African minerals and ores, Mining industry of the country

Togo 2015 27€ Minerals and Gemstones of the World, Elizabeth II Jewelry

Guinea-Bissau 2010 Mi.4985-0+Bl.862 24€ Minerals and ores of Africa

Guinea 2013 38€ African minerals and ores, Mineralogy

Papua New Guinea 2008 Bl.69 10€ Island gold mining, Technology

Papua New Guinea 2008 Bl.70 7€ Island gold mining, Technology

Congo 2015 - Minerals and rocks of Africa, minerals

Mozambique 2014 Mi.7540-3+Bl.948 €20 Minerals, halite, malachite, amethyst

Mozambique 2016 Mi.8739-2+Bl.1188 42€ - Precious minerals