BUZZ-Petra: diamond market stabilising
** Petra Diamonds (LSE: PDL.L - news) , which has been hit recently by a difficult market for rough diamonds, up 5 pct at 1-mth highs after posting in-line H1 results
** Co says while diamond market still pressured, there are signs it is stabilising
** Petra cut FY guidance for prices it would get for diamonds from much of its mines in late Jan due to softness in the diamond market
** BofA Merrill Lynch, on Weds, upgraded rating on Petra to "buy"; reckoned issue around rough diamond pricing weakness now more understood, & saw limited evidence to show any worsening in pricing outlook (RM (LSE: RM.L - news) : tricia.wright1.thomsonreuters.com@reuters.net)