The Netherlands GEOLOGICAL SETTING OF ZAMBIAN EMERALD DEPOSITS A.S. SLIWA and C.A. NGULUWE Zimco Limited...Lusaka (Zambia) ABSTRACT Sliwa, A.S. and Nguluwe, C.A., 1984. Geological setting of Zambian emerald deposits...deposits. Precambrian Res., 25 : 213--228. The Kafubuemerald deposits occur within rocks of the Muva Supergroup...immediately southwest of the well known Copperbelt of Zambia. Within the Muva Supergroup are persistent...sometimes within the quartz--tourmaline veins. The emerald fields are considered comparable in quantity and
our way through the compet itive minefield of emerald science, much of John's contribu tion to this...opinion. extraLapis English No. 2: Emerald The Most Valuable Beryl The Most Precious Gemstone Publisher...we • pay tribute to John Sinkankas to whom this emerald issue is dedicated. John Sinkankas wrote more...than 15 books including his 1981 definitive work Emerald and Other Beryls. He set standards for authors...Gloria & Gunther A 2001 Find of top-quality emerald crystals from La Pita at Maripi, Boyac
(11) 2.16 ct demantoid, (12) 1.05 ct emerald, (13) 1.99 ct red beryl, (14) 0.72 ct ruby, (15) 1.15 ct purplepink...available. Or the devastation inflicted on the emerald market when the stability of new and even traditional...marketed, and merchandized. In diamonds especially, the mine-to-market process has been severely tested. Vertical...snapshot of a decade—and a profound one at that—from mining and localities to treatments and synthetics to...more commercially important gem materials (i.e., emerald and other beryls, alexandrite and other chrysoberyls
