Common definitions of Opal include:
A gem that is considered a mineraloid because it is not truly crystalline. Its water content ranges from 5%–10%. The gem is usually iridescent and its colors range from milky blues and greens to deep browns and yellows. It is the national gemstone of Australia and the birthstone for the month of October.
Nickname of the Australian Women’s National Basketball Team.
A software used in low-level physics engines to support 3-D graphics and video games, among other applications.
Hurricane Opal formed in the Gulf of Mexico in October 1995. It made landfall in Pensacola, Florida. The death count was 59 (U.S. and Mexico) and property damage estimated at more than $3 billion. The hurricane name has been officially retired.
Opal Cortlandt, a long-running character on the American soap opera All My Children.
Related Opal resources
Official site Australian Government [1] About.com Jewelry/Accessories [2] Official site Australia’s Women’s National Basketball League [3] Official site Sourceforge.net OPAL [4] Geocities.com [5] About.com Geography [6] Official site All My Children [7]