Gem-A The Gemmological association of Great Britain
The Gemmological Association of Great Britain Since 1908 The Gemmological Association of Great Britain Gem-A is the world’s longest established provider of gemmology courses. Our Gemmology Diploma evolved from the first gem course proposed for the UK Jewellery trade in 1908 and our prestigious Gemmology and Diamond Diplomas are recognised throughout the world. Gem-A has been at…