Sammy Mollel frowned as he held up a sample of tanzanite ore containing the blue-to-violet gemstones unique to Tanzania. Normally the find would make his eyes light up. But Mollel's business faces ...

QVC Inc. suspended sales of tanzanite on its Web site, its television program and in retail outlets after a recent Wall Street Journal article raised possible links between tanzanite smuggling and ...

MERERANI, Tanzania -- In the shadow of Mount Kilimanjaro, miners with flashlights tied to their heads crawl hundreds of feet beneath the East African plain, searching for a purple-brown crystal that ...