Wed, Feb 5, 2003
Chemical similarity of rubies and sapphires; Sri Lanka's city of gems; enhancing color; gem-cutting; authentication.
Wed, Feb 26, 2003
Imperial topaz is only found in an area of the Brazilian state of Minas Gerais; how topaz is formed and mined; treating topaz to enhance color.
Wed, Mar 5, 2003
The Columbian emerald is rare and coveted by almost all who cross it's path.
Fri, Feb 28, 2003
In 1877 French scientist Edmund Fremy produces the first synthetic gemstone.
Wed, Jul 23, 2003
Examining ammolite, a fossilized sea creature from southern Alberta that exhibits a unique iridescent quality.