Government-owned Fidelity Gold Refineries (FGR) has reportedly moved to strengthen gold verification systems after suspected cases of tungsten-infused gold in Zimbabwe surfaced, raising alarm over potential losses to national revenue. According to reports by NewZimbabwe, the refinery has begun acquiring X-ray fluorescence (XRF) machines, each costing at least US$10,000, to detect manipulated gold deliveries allegedly linked to some miners operating in the country.