Gold and silver are the most stable currency the world has ever seen. The value of the bimetallic currency has remained surprisingly stable in relation to basic consumable goods:
A horse at the time of our Beloved Nabi Mohammad Salla'llahu Alaihi Wa sallam, cost about 1000 dirhams* today, 1,400 years later, a horse costs approximately 1000 dirhams (ZAR8,700 or about $1200 ).
Assuming $12.5/oz Silver, ZAR7.2/$ (September 2007)
3g/31.1035gx12.5x7.2x1000~=ZAR8,700 or $1200 for a horse
In 1,400 years inflation is zero. [www.e-dinar.com]