A triangular star shaped diamond adapted to display a hearts and arrows pattern when exposed to light comparable to the hearts and arrows pattern in a round diamond, comprising: six main crown facets, twelve crown half facets, a table facet, six main pavilion facets and an even number of main girdle facets separating the crown facets from the pavilion facets with each main crown facet having a symmetrical main crown facet in an opposing relationship and at least one edge in parallel alignment with an edge of the opposing main crown facet.