TM26E4: I have never seen other Rutiles like this one. I do not know if other similar specimens exist, but I guess that if they do they would be from a "once and only" find. Everything about it is distinct; not just the form of the Rutile crystal but also the termination; and then on top of that the rather rare orange Calcite that hosts it.
Slyudyanskoe deposit, Lake Baikal area, Slyudyanka, Irkutsk Oblast, Zabaykalsky Krai  Russia

Specimen size: 3.5 × 2.8 × 1.5 cm = 1.38” × 1.10” × 0.59”

Main crystal size: 2.9 × 0.7 cm = 1.14” × 0.28”