A consortium of gemological institutes formed to establish a standard of European certification, which members must adhere to. List of the member institutes and their offered courses.

Training and research in modern gemmology. Programs and fees, diamond grading, and enrollment. Site in English and German.

HRD Antwerp is dedicated to serving diamond professionals by offering products and services that benefit the diamond industry and trade.

Trade organization for retail jewelers. Consumer information, membership, and affiliates.

Not-for-profit trade association whose mission is to maintain the jewelry industry's highest ethical standards. Trade and consumer resources.

A non-profit-making trade body, within the British Jewellery and Giftware Federation. Members benefits, news, and index of products.

Aim is to provide an open, accessible and supportive channel for designers to share ideas, questions and concerns. Events, membership, and gallery.

Resource relating to the silversmiths' art and craft. Artisan gallery, silver care, workshops, and library.

Focuses on the art and skill of faceting gemstones. Tips and techniques, online discussion, and diagrams.