Australian silver miners gain as precious metal prices strengthen
** Australian silver stocks rise, while the broader mining sub-index .AXMM jumps 7.4%
** Spot silver prices rise alongside other precious metals like platinum and gold GOL/
** Unico Silver USL.AX adds 12.5%, touching its highest level in nearly three weeks
** Investigator Silver IVR.AX gains 11.3% while Silver Mines SVL.AX adds 13%