Over the past year, my brother in law and I have been working a patch in an old gold mining area. This is my effort for about five visits. The XT70 is amazing on small gold. The largest slug is about 1.1grams and the smallest less than 0.1grams. My brother in law lives in the area and has visited more often and now has half an ounce in small nuggets. The versatility of the XT70 is great!