Lost pedant, ring and cross found on a boat ramp

I received a call from a friend whose daughter had a necklace break while she was in the water on a boat ramp. She was able to catch the necklace but lost a gold/diamond ring, gold/diamond pendant and a sentimental gold cross, all were on the necklace. I arrived after work and got the info and started to look on the ramp and realized how hard this was going to be. The water was high, about 4”-6” of mud and silt on the boat ramp, boat ramp had rebar in it giving the metal detectors fits, beside the ramps were big underwater boulders. The first one I found was the ring(very dainty!!) I switched to another metal detector with a small coil and found the pendant. All this took 1 to 1-1/2 hours but the most sentimental piece (cross) couldn’t be found. I asked them to let me know when the water had gone down and I was confident that I could find the cross at that time.
16 days later she contacts me and said that the water is lower. I arrive and set the detector up and literally stuck the coil in the water and got a good signal and there was the cross. All three back to a very grateful family!