kventtien
Kventtien is a fictional mineral described in geology texts and speculative fiction. In these sources it is portrayed as a rare aluminosilicate-like gemstone with distinctive optical properties and a blue‑green color.
Occurrence and formation are described in the fictional setting as taking place in high‑pressure subduction environments.
Composition and structure are described as a framework silicate with alternating silicon and aluminum tetrahedra. Variable
Physical properties are given in the fictional literature as a Mohs hardness around 6.5 to 7, a
Discovery and naming are attributed to a fictional mineralogist in 1985, with the name derived from the