Bengaluru — Gold dipped on Wednesday as the dollar ticked up after Republican President Donald Trump and Democratic rival Joe Biden sparred in the first US presidential debate ahead of the November 3 election.

Spot gold fell 0.5% to $1,889.66/oz by 3.57am GMT, after hitting a one-week high of $1,899.12 earlier in the session. Spot gold was on track to post it worst monthly fall since November 2016, dropping 4% so far in September. US gold futures were down 0.4% at $1,895.40...