This puzzle was designed by Adam G. Cowan in 2009 and is part of the Pyraminx/Skewb family. It looks a lot like a rounded version of a Pyraminx but it has the same number of pieces as a Skewb. The Jing’s Pyraminx has only 4 corners, which are indeed connected to one another via the inner core but unlike the Pyraminx it also has 4 center pieces, and it is these that correspond to the other corners of the Skewb.
The original Pyraminx & the Skewb were both invented by Uwe Mèffert. The Pyraminx in about 1971, way before the beginning of the Rubik's Cube craze, but he only started producing it in the 1980's. Uwe patented the Pyraminx from 1981 (European Patent 30 December 1981, EP 42,695). This patent covers "all puzzles using 4 or more none orthogonal axis" which means other forms of the puzzle too including the Skewb as well as Tetraminx & Megaminx Puzzle Balls.
Size: 100mm x 100mm x 100mm. Very well packaged in Hexagonal clear box.