The world's supply of zinc has been dropping due to the reduced number of zinc mines.
Net gold imports by the world's top gold consumer through the port of Hong Kong rose to 111.647 tons in March from 47.931 tons in February.
Increase in demand in base metals has driven their prices up, but whether this is sustainable remains to be seen.
Nickel and copper lead the rally in base metals, with prices hitting record highs since the last week of February.