Twinning is common in sphene and forms a classic twin shape that is found mostly in Pakistan. The twin is shaped like a deflated, caved-in football, only with flatter surfaces. Spene can form nice crystals and can make a lovely addition to the collection of a collector who appreciates different crystal forms. Color is green, yellow, white, brown or black. Luster is adamantine.
Crystals are transparent to translucent.
Some crystals are not so elongated and can have a trigonal appearance similar to a flattened rhombohedron. Twinning is common and produces a twin that is shaped like a deflatted, caved-in football, only with flatter surfaces. Associated Minerals are chlorite , anatase , calcite , quartz , zircon and feldspars . Pleochroic if strongly colored. Best Field Indicators are crystal habit, luster, hardness, twinning if present and color.