Using state-of-the-art production technology, ONSA refines gold of 999.9 and 995 fineness and also produces 22-karat (916) gold bullion, gram gold bars, and drawn gold products such as wires and strips.
From its foundation, ONSA has set clear objectives — to combine superior product and service quality with environmentally friendly production technologies.
Accordingly, its facilities were designed with integrated chemical and gas purification systems to ensure environmentally safe and sustainable operations.
ONSA’s dedication to quality, environmental responsibility, and occupational safety is certified by numerous international standards, including ISO 27001, ISO 14001, and OHSAS 18001.
At the ONSA Laboratory, every analysis is performed with the utmost precision using the latest analytical technology and a team of highly qualified experts.
ONSA holds the “Private Assay Office Authorization Certificate” issued by the Turkish State Mint (under the Ministry of Treasury and Finance of the Republic of Türkiye) and the internationally accredited ISO 17025 Certificate, confirming that its laboratory services meet global standards.
We remain fully committed to continuously increasing the value we create for our customers, employees, business partners, and for our country — working tirelessly to uphold excellence in quality, reliability, and innovation.
