Hi guys. Looking to buy a small test nugget for my Gpx 5000. Somewhere between 0.5 and 0.3 of a gram (unless otherwise suggested). I will be using this nugget for testing different settings to achieve maximum depth with both the 12" nugget finder advantage coil and 15" x 12" minelab commander. Im located around Bendigo...and will prospect the GT. Was hoping to use it this weekend and can pick up if around bendigo....if not I'll try eBay. Thanks in advance.