Some useful links to check out.

• World Federation of Diamond Bourses (WFDB)
• The World Jewellery Confederation - CIBJO
• World Gold Council
• Rapaport News
• GIA - Gemological Institute of America
• HRD - The Diamond High Council
• IGI - International Gemological Institute
• SSEF-Swiss Gemmological Institute
• Antwerp - The Diamond Museum
• City of Antwerp
• Ramat Gan Diamond Exchange
• City of Tel Aviv
• City of Mumbai