Nickel leads rally with sharp price surge RBI intervention strengthens INR below 90 mark Base metals prices on the London Metal Exchange (LME) strengthened, posting broad-based gains on 7 January on improved market sentiment. Nickel led the rally, surging 8.95% to $18,524/t, while aluminium rose 1.41% to $3,129/t. Copper prices advanced 1.90% to $13,238/t, supported…