Touchstone Gold's shares gained Tuesday after the mining group announced it started further drilling at its Segovia gold project in Colombia.The company has kicked off the initial 5,000 metres at its stage four drilling programme and will target three zones - 1141, Tagual Zone and Bern Zone.First assays from the drill programme are expected in April.In the Bern Zone, Touchstone has identified a new target zone with a depth potential southeast of the 114.The 1141 zone is located 200m south of the Filodehambre zone at the property, and so far has produced the best gold values and widest intercepts.The Tagual Zone, 600 metres east of the Pepas zone, contains about 1,000 metres by 400 metres gold geochemical signature and hosts gold-bearing quartz vein material. "We are excited to begin our stage four drilling programme, building on our previous drilling success," Chief Executive Officer, David Wiley, said."We will be stepping out along strike and down dip from the known gold mineralization at the 1141 zone and also testing two other prospective zones, presenting opportunities for new discoveries. "We expect to turn assays around quickly and look forward to reporting the first results in April, which we are hopeful will confirm the high potential of our assets in the region."Shares rose 2.78% to 9.25p at 09:57.RD