	*Bariand, Pierre, Poirot, Jean-Paul, Duchamp, Michel (1985) The Larousse Encyclopedia of Precious Gems. Van Nostrand Reinhold Co., New York.*	Book
	of very fine gemstones. Their collaborator in the area of engraved gems was Michel Duchamp; the French...produces folded metamorphic Topaz from the Ouro Préto area of Minas Gerais, Brazil Part One: Introduction...small Sandawana production, from the Fort Victoria area in Zimbabwe, is sold through a system of ‘‘sights”...is diminishing in favor of the Bombay (Surat) area in India and New York. Today's small ruby production...ruby. 1.5 by 1.5 cm. Djevahirdjian company, Switzerland Contrary to the case of diffraction, the colors
	*(1969) Engineering and Mining Journal* Vol. 170. Mining Media International**	Journal (volume)
	eleven sodium prospecting permits were issued in the area. Of these, eight were drilled for discovery and...acquired coal, water, and limestone deposits in the area to support a multi-products industry. The government...50¢ 50¢ MANAGEMENT 50¢ 89 opens new phosphate area. 28 pp, 1968................... $1.00 Palabora—South...1968 that dawsonite, found in parts of the shale area, is leasable and not locatable. E/MJ—January, 1969...Somali in East Africa. The concession is near an area where a United Nations team last year pulled cores

Bertrandite from Turbe, Albrunhorn - Turbhorn area, Binn, Goms, Valais, Switzerland