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Articles Featuring Marc Sarosi of

July 2001 Marc Sarosi of, along with other Internet based gem dealers speak out against misrepresentation of gemstones on line. Marc Sarosi speaks out against misrepresentation of gemstones on-line.

Gem News - Fall 1997
Marc Sarosi provided rough demantoid crystals and faceted gemstones to the editors of Gems and Gemology for study. Newly Discovered Namibian Demantoid Garnet.

Notes and New Techniques Fall 1997
Marc Sarosi contributed the gemstones for this article about the newly discovered multi colored tourmaline from Zambia. Multi Colored-Bismuth Bearing Tourmaline from Lundazi, Zambia.

Gem News Spring 1998
Marc Sarosi reports on a new tourmaline source from Namibia Another Tourmaline Source from Namibia.

LUNDAZI TOURMALINE: Color Zoning Unplugged
When miners at Lundazi in eastern Zambia hit tourmaline in October 1996, little did they know that they were about to give jewelers a new gemstone romance factor: color zoning. Zoning can wreak havoc in, say sapphires. Ah, but tourmaline is another matter. Here color zoning is asset, not a liability.

Now Los Angeles gem dealer Marc Sarosi, who was in Zambia when the Lundazi strike was made and bought nearly all its production, is taking advantage of the unique color zoning in some of this African material to create hue blends rather than blocks. To judge the success of his efforts, see Tino Hammid's shoot on the preceding page. What you see there might be called color zoning unleashed, or at least unplugged. That stone features "checkerboard" faceting on the table so that its golden yellow, lime-green, and dawn-pink color components are equally manifest and mixed. From every angle the stone is viewed, it seems a patchwork of the three colors. The patchwork effect is deliberate, says the stone's owner, mail order specialist Fred Rowe, of House of Onyx, who bought all of the multicolored tourmaline Marc Sarosi earmarked for America (the remainder went to Japan). Between July 1997 and January 1998, the new Zambian multicolored tourmaline was Rowe's biggest seller in units, finding homes with roughly 300 of Rowe's customers. "A surprising number of people bought three stones so they could make ring and earring ensembles," Rowe says.

Uncertain Future

Can tourmaline from other sources be cut to achieve the same mixed-color look? If so, will such stones start appearing in large numbers? Should only Lundazi tourmaline lend itself to color blending, these stones may quickly become collector items. At present, the future of mining in Lundazi is a matter of some suspense. News of the initial discovery sparked a gem rush of some 700 would-be miners. By May, only 60 people were working the find and Sarosi was convinced he had obtained most of the multicolored rough.

By David Federman
Executive Director
Modern Jeweler Magazine