** Shares of Peak Rare Earths PEK.AX rise as much as 26.9% to A$0.425, their highest level since August 28, 2023
** The rare-earths explorer set for best day since May 15, if gains hold
** Chinese rare-earths producer Shenghe Resources 600392.SS hikes scheme consideration to A$0.443 per peak share from A$0.359 under its revised takeover offer for co
** New offers values Peak at A$195 million ($126.71 million); Shenghe says offer best and final
** Stock up nearly ~300%, this year, including the day's move
($1 = 1.5389 Australian dollars)
(Reporting by John Biju in Bengaluru)
((John.Biju@thomsonreuters.com;))