The ancient Egyptians used turquoise in jewelry. Turquoise is greenish-blue or pale sky blue. The name means Turkish stone as it came to Europe by way of Turkey. Turquoise was mined more than 6,000 years ago in Sinai.
Coulonges is situated in the Charente (Poitou-Charentes region) in the west of France at 21 km from Angouleme, the department capital. (General information: Coulonges is 377 km from Paris).
Buc is located 21 km south west of Paris, France. The old town and a part of the city is located inside the vallÃ©e de la BiÃ¨vre (BiÃ¨vre valley) at an altitude of approximately 100 meters. Most of its residential neighborhood are implanted on the plateau de Saclay (Saclay's plateau) at around 50 meters higher.