The surface of the black-shelled jade artifacts had been painted with mineral pigments composed of 35 elements.: It includes iron, copper, phosphorus, chrome, nickel, manganese, titanium, mercury, calcium carbonate, cobalt, etc. and typically covered with black pigment. Prof. Chai Hisuk from Korea did a great research about these pieces. Age dating done at a University in Seoul came up with 14.300 +-60 years
There are so many strange artifacts on earth but some are too good to be real for the scientists and fans of UFO and extraterrestrials, but the pieces are real and old. Further tests will be done. I have many photos from different provinces in Mexico, some of them i show to you today. Even my main research is for ancient civilizations, I can tell you, there are these artifacts and they open many questions about our past history in Mexico.