minerals and rocks ,spherulitic structure in grainy stone of a ball diorite, semi-polished (corsica, france) - 人造寶石 幅插畫檔、美工圖案、卡通及圖標熔岩
four-sided prism capped by a four-sided pyramid ,crystal forms of the quadratic systems - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
hexagonal pyramids of the 1st order ,crystal forms of the quadratic and hexagonal systems - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
dodecahedral/12-sided pyramid ,crystal forms of the quadratic and hexagonal systems - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
a more complex form including a flat "base" or pinacoid at the top and bottom ,crystal forms of the quadratic and hexagonal systems - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
a combination of a six-sided prism capped by pyramids ,crystal forms of the quadratic and hexagonal systems - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
minerals and rocks ,almond stone structure of melaphyre (ilfeld, thuringia, germany) - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
crystal forms of the tetragonal system ,tetragonale pyramide ,pyramid rotated 45*relative to the first order. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
crystal forms of the tetragonal system ,tetragonales prisma ,four-sided rectangular column (square cross-section). - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
tetragonales prisma 2. ordn.: a prism rotated 45* relative to the first order. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
a standard rhombohedron, a three-dimensional figure similar to a cube but slanted. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
a hexagonal scalenohedron, a 12-faced solid common in calcite crystal formations. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
a deltoidal dodecahedron, a 12-faced solid where each face is a kite-shaped deltoid. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
a hemimorphically developed crystal of tourmaline, showing asymmetrical terminations at the top and bottom. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
an orthorhombic sphenoid, featuring four faces within the orthorhombic crystal system. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
the orthorhombic (rhombic) system ,(rhombic prism): an elongated four-sided column with a rhombic cross-section. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
a triangular dodecahedron (also known as a triakis tetrahedron), featuring 12 triangular faces. - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
iron cross twin ,penetration twin formed by two pentagonal dodecahedrons. this is the famous "iron cross" characteristic of pyrite (fool's gold). - 人造寶石 幅插畫檔、美工圖案、卡通及圖標
