Gambia Turquoise Marriage Fashion Jewellery Ring Necklace.
By Aamir Mannan.
The turquoise is found in sandstone that is, or was originally, overlain by basalt. Copper and iron workings are present in the area. Large-scale turquoise mining is not profitable today, but the deposits are sporadically quarried by Bedouin peoples using homemade gunpowder.[citation needed]
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