When I buy diamond jgis from different sources, I realized there are many different shapes of diamond jigs. I can not tell which shape of diamond jigs work better as I didn't pay much attention to it in the past. One style jig which caught my eyes is hammered diamond jig with flat shape as you see in the picture below. Guys who use them told me they are great for any fish. But I got to try it myself. I am going to test it for seabass first, then tuna. different shapes of diamond jigs I call it Flat hammered diamond jig.