Gold Bar Digging Kit for Kids - Excavation Toy Bundle with 6 Diamond Mining Kits Including Mystery Gemstones and Tools for Kids, Boys, Girls | STEM Digging Toy Set Gold Bar Dig Bricks. This diamond digging kit for kids comes with 3 Diamond Dig It kits and 3 gold bar dig bricks, each complete with 1 rock for digging, a mallet, chisel, and brush. Use the included tools and dig away at the mystery gold bars and diamonds to reveal your very own gemstone. Find an amethyst, salt crystal, rock crystal, or even a diamond! Sure to be a hit with boys and girls alike, this gold bar mystery gemstone digging kit is a great STEM toy for any child interested in science and archeology. This gold bar and diamond digging mystery kit for kids also includes NASA stickers.