FRED - Federal Reserve Economic Data

Producer Price Index by Commodity for Miscellaneous Products: Jewelry, Gold and Platinum 97.2 Index Dec 2011=100 on Jun 2019 94.4,95.2,96.0,97.2,96.5,96.8,97.0,97.6,97.1,97.2
Industrial Production: Mining: Gold ore and silver ore mining 92.5354 Index 2012=100 on Q2 2019 95.8082,111.2663,97.7427,98.3060,86.0401,86.1109,86.9567,94.6449,90.1164,92.5354
Producer Price Index by Industry: Gold Ore Mining: Primary Products 314.7 Index Jun 1985=100 on Dec 2017 303.0,309.0,308.3,312.0,307.0,312.6,325.9,317.9,315.9,314.7
Relative Importance Weight (Contribution to the total industrial production index): Gold ore and silver ore mining 0.1845 % on Jun 2019 0.1598,0.1694,0.1786,0.1757,0.1839,0.1877,0.1758,0.1846,0.1799,0.1845