http://www.kuwayama.co.jp - The leading platinum jewellery manufacturer in Japan
	http://www.motiganz.com - Manufacturers of polished diamonds + DTC sightholder
	http://www.elaradiamonds.com – Flanders Brilliant in the USA
	http://www.adiamondisforever.com - The official DeBeers website
	http://www.diamonds.be - Antwerp World Diamond Center - Belgium
	http://www.diamonds.net - The Diamond Trade Network
	http://www.gia.edu - the Gemological Institute of America