** Indian gems and jewellery stocks fall 5.5%-11% after PM Narendra Modi urges people to avoid buying gold to save foreign exchange
** PM's comments come after Donald Trump rejected Iran's response to peace proposal on Sunday, pushing oil prices higher
** Kalyan Jewellers KALN.NS drops ~10% to 382.10 rupees; Titan TITN.NS falls as much as 7.95% to 4,150.10 rupees; Senco Gold SENC.NS sheds ~11% to 325.05 rupees
** Bluestone BLUT.NS, PC Jeweller PCJE.NS fall more than 5% each
** Gold XAU=, traditional safe-haven asset, falls as oil rallied on stalled U.S.–Iran talks
** Broader stock market under pressure; benchmark Nifty .NSEI down ~1.2%
(Reporting by Bipasha Dey in Bengaluru)
((Bipasha.Dey@thomsonreuters.com;))