Courteous

The soft peach beryl of the great houses — court manner spent on ordinary people.

Morganite · The Law of Patronage

Family: Beryl, coloured by manganese — sister to emerald
Hardness: 7.5–8 on the Mohs scale
Colour: Pale peach to blush pink, clean and even
Signature: Named for J.P. Morgan, the collector-patron who funded the mines

The stone read as the word

Morganite is emerald's family in a gentler colour: the same hard beryl, dressed to meet people. It was named in 1911 for a patron who paid for other people's science and never cut the stone himself.

Courtesy is exactly that combination — hardness of 8 with a blush finish. The manner is soft; the material underneath is not.

What it is carried for

Carried when she must meet a stranger level and go first with the manner.
Held for royal politeness spent on someone who cannot repay it.