** Diamond miner's shares down 3.6 pct after sayingit achieved an avg price of $2,264 per carat in H1, down from$2,338 per carat in the preceding six months
** Diamond market seeing high inventories and continuedliquidity concerns, co says
** Weak diamond prices have forced Anglo American's De Beers, the world's largest rough diamond producer by value,to cut its production
** Liberum analysts cut PT on stock to 210p from 250p, keep"buy" rating
** Stock at levels last seen in July 2013, with more thantwice its 30 day avg volume having gone through by late morning (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)