Congenial

Verdelite grown in agreeable company — of the same kind, born easy to be near.

Green Tourmaline · The Law of Patronage

Family: Elbaite tourmaline (verdelite)
Hardness: 7–7.5 on the Mohs scale
Colour: Forest to spring green, deeply striated
Signature: Pyroelectric — it warms into charge and attracts what is light

The stone read as the word

Tourmaline grows in pockets shared with quartz, lepidolite and mica, and the green crystals come out longest where the company is good. Heat it and it takes a charge; it was used in Holland to pull ash out of a pipe.

Congenial means of the same genus — born agreeable. A sovereign who is congenial levels the ground: she raises the low side so the room can be one kind.

What it is carried for

Carried when she must equalize, not merely be equal.
Held for company that grows better because she is in it.