Zircon from the Harts Range, Northern Territory, Australia

Gem-quality zircon from a relatively underdeveloped locality in the Harts Range o f central Australia is described. While exhibiting many properties of other gem zircons, this material is unusual in its almost total lack of radioactive trace eleinents. Thus, there is little or no radiation-relatedstructural damage as is the case with softie other gem zircons. The Harts Rmge material occurs in a size, quality, and color range suitable for faceting.