Companionate

The crystal that carries a charge when warmed — nearness that actually does something.

Pink Tourmaline (Rubellite) · The Law of Positivity

Family: Elbaite tourmaline — complex boro-silicate
Hardness: 7–7.5 on the Mohs scale
Colour: Raspberry to deep rose pink
Signature: Pyroelectric and piezoelectric — it builds an electrical charge from heat or pressure

The stone read as the word

Tourmaline is one of the few gems that becomes electrically polarised when it is warmed; Dutch traders once used it to pull ash out of pipes. A stone that responds to warmth by generating charge is a fair picture of companionship.

Rubellite is the pink to red variety, and it grows in long striated columns that look bundled together rather than solitary. Company, in this stone, is structural.

What it is carried for

Carried for friendship that produces something, not just proximity.
Held when a woman's warmth is meant to charge the room.