** Deterra Royalties DRR.AX rises as much as 8.3% to A$4.44, highest since August 19
** Stock top gainer on S&P/ASX 200 index .AXJO, which is down 0.6%
** Diversified resource royalty co agrees to sell non-core gold offtake assets, alongside St Ives and Dandoko gold royalties, for $60 million to Vox Royalty VOXR.TO
** Proceeds will be used to reduce net debt
** Co says gold offtakes delivered net return of more than $13 mln since acquisition, reflecting 25% pre-tax internal rate of return
** DRR last up 5.6%, taking YTD gains to 16.4%