There are a variety of Gemological Institutes that appraise diamonds and issue Diamond Gemological Reports, measure and certify loose diamonds and diamond jewelry. Depending on your region, there are a number of reputable companies including the following listed below.

		HRD - Hoge Raad Voor Diamant (The Diamond High Council). The officially recognised representative of the Belgium diamond trade and industry. HRD headquarters are located in Antwerp, World Diamond Center.
		GIA - Gemological Institute of America. Founded in 1931 in Los Angeles, the GIA created and introduced the international grading system. Headquarters are still located in Los Angeles.
		IGI - International Gemmological Institute. The oldest institute of its kind in Antwerp. Set up in 1975 with labs in New York, Bangkok, Mumbai and Tokyo
		GemScan - GemScan International was incorporated in 1985 as an independent jewellery appraisal laboratory providing gem identification. Gemscan is based in Toronto, Ontario Canada.
		AGS - American Gem Society Founded in 1934 by Robert M. Shipley who also founded the GIA. The AGS is based in Nevada, USA.
		EGL - European Gemological Laboratory. EGL was originally opened in Antwerp in 1974, and now has laboratories in Antwerp, New York Los Angeles, Johannesburg, Paris, London, Israel and Seoul.

So which lab report is the best lab report? Who can I trust? Ask our diamond experts and get free advice in our forum! > ENTER FORUM