ISGJ – International School of Gems and Jewellery, is an internationally accredited school for studies in jewellery, diamonds, gemmology and management. ISGJ is known for its unique and adaptable professional... Read More
ISGJ – International School of Gems and Jewellery, is an internationally accredited school for studies in jewellery, diamonds, gemmology and management. ISGJ is known for its unique and adaptable professional... Read More