** Shares of diamond miner Petra Diamonds PDL.L down as much as 6.1% at 26.3p
** Stock among top losers in FTSE small-cap index .FTSC, which is down 1.4%
** Co's Tender 5 sales for Cullinan Mine (approx. 200,000 carats) postponed due to uncertainty over the U.S. tariffs
** Says ongoing market issues, including U.S. tariffs, are affecting pricing assumptions for FY 2025
** Peel Hunt reiterates a "buy" rating with a target price of 50 pence
** YTD stock down ~9.6%
(Reporting by Judes Joseph in Bengaluru)
((judes.joseph@thomsonreuters.com;))