Asian Institute of Gemological Sciences

[AIGS]

www.aigsthailand.com

B.G. & J. Co.,Ltd

[Bangkok Gems & Jewelry Magazine]

www.gemsgateway.com

CMP Media (Thailand) Co.,Ltd.

[Hong Kong Jewellery & Watch Fair]

www.thai-exhibition.com

G. L. D. A.

[Pan American Enterprises]

www.glda.com

www.tucsongemshowguide.com

GIA (International) Co.,Ltd.

[Gemological Institute of America,

Thailand Campus]

www.giathailand.com

Hong Kong Jewellery Magazine Ltd.

[Hong Kong Jewellery Magazine]

www.jewellery-hk.org/hkjm.htm

I.G.S Public Company Limited

[Gemopolis]

www.gemopolis.com

Jewel Fest Club

[TGJTA : Jewel Fest]

www.jewelfest.com

Jewellery World Review

www.jewelleryworldreview.com

Thai Gem & Jewelry Traders Association [TGJTA]

www.thaigemjewelry.com

www.thaigemjewelry.or.th

Precious Business Co.,Ltd.

[Thailand Gemstone]

www.thailandgemstone.com

Vicenza

[Vicenza ORO]

www.vicenzaoro.org