** Horizon Gold HRN.AX jumps as much as 14.4% to A$0.755, highest since November 5, 2020
** Stock marks biggest intraday pct gain since July 28
** Gold explorer finds gold at Gum Creek gold project in Western Australia
** Partners with VRIFY Technology to use VRIFY's AI platform, DORA, for mineral exploration
** About 353,824 shares traded, 4.3x the 30-day average
** YTD, HRN gains 42.7%
(Reporting by Ananya Verma in Bengaluru)
((ananya.verma@thomsonreuters.com;))