too good to be true? any advise

Hey, pretty new to the shares game so looking for advice. I Not long bought some shares in Haoma mining based on tip telling me how they have found a new method of processing gold and other precious metals with much higher yield than the current method and they have been processing trailings from previously mined ore and returning something like 100grams per tonne of gold which i thought sounded pretty amasing so i set up a commsec acc and invested. Already have seen a pretty good return so tempted to just sell up and take the profits. But I know I'll kick myself if it does boom and then find out I've missed out on a possible fortune. So just interested in more experienced investor's opinions and advice on what to do and the company itself? Thanks in advance :)