Hi!    I was wondering does the price of gold, silver, pearls, diamonds, etc. vary between countries?  If so could you point me to a site where I could find the prices of precious metals/stones for every country?    I've tried googling but I only seem to find the u.s. gold/silver/whatever price, is it a global indicator?  I also tried the central bank sites of some countries to no avail...    Thanks in advance. :D