BUZZ-Gem Diamonds: At 2-yr low as soft prices hurt stock
** Diamond miner's shares down 3.6 pct after saying it 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 continued liquidity concerns, co says
** Weak diamond prices have forced Anglo American (LSE: AAL.L - news) '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 than twice its 30 day avg volume having gone through by late morning (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)