Plant it to grow Dark Cave Background. This far-away dirt is speckled with shiny minerals. However, this dirt is in a dark cave (I don't care where you put it, IT IS IN A DARK CAVE!!). Players can only see what's on this tile if it's in their line of sight, or they have special tools.
Dark Cave Background Seed price in Growtopia: sells for about 20/WL (median of 1 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: UUUSELL