Jess Franco makes exploitation films, and he has made tons of them. Franco is responsible for some of the most shocking films in cinema history, and god bless him for it. Unfortunately, The Diamonds of Kilominjaro is a truly awful movie that is not up to his usual standards.
Exploitation films should be judged on story, sex, and gore. What else is there? This film fails on most of those benchmarks. The plot is paper thin, placing a nubile young girl in the jungle among cannibals. We really don't get information on why she and her father were there in the first place. As expected, her father is the "Big White Chief" and she becomes a goddess, sitting in trees, naked. Add fortune hunters and precious stones, and you have your basic rescue the girl for greedy intentions plot line. The characters are stock, not adding an ounce of believability to the proceedings.
Gore? None, or at least very little. This film is often mentioned in the same vein as the classic Italian cannibal movies. Those seeking that type of gore need to run the other way. Save for one cheap be-heading, this movie features surprisingly little blood and guts.
As best I can tell the only reason this movie exists is so Katja Bienert, Aliene Mess, and Mari Carmen Neieto could run around naked. Actually "Lita" (Mari Carmen Neieto) does the full frontal heavy lifting, while the two jungle ladies are bare chested throughout. Yes, there are love scenes....probably the most sterile Franco has ever supervised. The women are beautiful, but nothing here to really make this movie an erotic classic either.
This movie just reeks of low budget buffoonery. The sets are laughable. The acting is horrid, and the editing is confusing. There is no real story to hold this together, and not enough of a budget (or effort) to shock or titillate. I think Franco fans have come to expect more out of the master of exploitation.