The Japan Jewellery Association (JJA) is a distinguished non-profit organization established in 1988, dedicated to promoting the healthy development and advancement of the jewellery industry. JJA serves as a comprehensive resource for consumers and industry professionals, offering essential knowledge about jewellery, including diamonds, colored stones, and organic material. They provide a wealth of services, such as consumer consultation, research on market trends, and collaboration with both local and international entities.

JJA extends membership to manufacturers, exporters, importers, and retailers, while also welcoming supporting members from various related organizations, including schools and appraisal agencies. Their initiatives encompass educational seminars, certification programs for jewellery coordinators, and regular industry reports. With a commitment to enhancing consumer trust and knowledge, the association keeps its members informed through newsletters, events, and access to valuable research materials. Through these efforts, the JJA plays a pivotal role in shaping the jewellery landscape in Japan, ensuring a transparent and thriving industry for all stakeholders.