Links

Some sites for you to research:

Tungsten Heavy Powder
The only company in the world to manufacture spheroidal tungsten powder with a high tap density.

Tungsten Spheres
Advanced lead replacement solutions in the shape of tungsten spheres (beads), balls
or cubes. Any alloy, any size, any finish.

U.S. Government's Priority List of Hazardous Substances
The site lists lead as the one of the most toxic substances in use today, second only to arsenic. Tungsten, by comparison, is much more environmentally friendly.

Tungsten Treasure - Tungsten Jewelry
Tungsten Carbide Jewelry – quality, affordable rings, pendants, bracelets, and watches made from Tungsten Carbide.