** Shares of Unico Silver USL.AX rise as much as 27.3% to A$0.42, their highest level since April 16, 2021
** Stock set for best day since August 5, 2022, if trend holds
** The silver developer finds exceptional gold and silver assay results in southeast extension of the La Negra prospect at its Joaquin project in Argentina
** Results confirm presence of shallow, broad, high-grade oxide mineralisation more than one kilometre south-east of the historical Foreign Estimate at La Negra
** Around 6.1 million shares change hands, 3x the 30-day avg trading volume of about 2.1 mln
** YTD, stock up 112.8%
(Reporting by Shruti Agarwal in Bengaluru)
((Shruti.Agarwal@thomsonreuters.com))