Soap manufacturer PZ Cussons is going well after it said it remains 'cautiously optimistic' for the full year despite uncertain economic conditions after seeing strong trading in its main market of Nigeria and in the UK.Gem Diamonds is sparkling after its smaller peers Kopane Diamond and DiamondCorp revealed how they are the subject of investor interest. Kopane has entered into an exclusivity agreement with a potential investor in its Liqhobong mine and DiamondCorp said it is in talks that may lead to an offer.Elsewhere in the world of precious commodities, gold and silver miner Hochschild is going well.FTSE 250 - RisersAG Barr (BAG) 793.50p +3.73%Gem Diamonds (GEMD) 233.00p +3.69%Daejan Holdings (DJAN) 2,760.00p +3.68%Travis Perkins (TPK) 827.00p +3.18%Brit Insurance Holding (BRE) 203.90p +2.88%PZ Cussons (PZC) 254.00p +2.63%Hochschild Mining (HOC) 306.00p +2.62%Robert Wiseman (RWD) 437.80p +2.58%BTG (BGC) 183.00p +2.46%Inchcape (INCH) 28.48p +2.37%FTSE 250 - FallersAvis Europe (AVE) 33.06p -3.45%Rank Group (RNK) 84.05p -3.00%Sports Direct International (SPD) 97.80p -2.98%DS Smith (SMDS) 103.30p -2.55%DSG International (DSGI) 25.05p -2.34%Keller Group (KLR) 700.50p -2.30%Ultra Electronics Holdings (ULE) 1,275.00p -2.30%Galiform (GFRM) 73.00p -2.08%Cookson Group (CKSN) 390.90p -2.08%F&C Commercial Property Trust (FCPT) 82.75p -2.07%