What does Small Religious Carving do in CK3?

Piety +0.1/month (patch 1.20.0.3).

What if the owner can't benefit from Small Religious Carving?

They get Prestige +0.05/month instead.

Personal artifact · Trinket

Small Religious Carving

CommonHoly relic

Small Religious Carving is a common trinket artifact in Crusader Kings III: Piety +0.1/month. Quality 20 and wealth 10; maximum durability 60. Patch 1.20.0.3, from game/events/lifestyles/governance_lifestyle/stewardship_wealth_events.txt.

Quick answers (2)

What does Small Religious Carving do in CK3?: Piety +0.1/month (patch 1.20.0.3).
What if the owner can't benefit from Small Religious Carving?: They get Prestige +0.05/month instead.

This is a small but intricate … styled carving of a ….

Effects

Piety+0.1/month

For an owner who can't benefit from it

The template gives these instead of the effects above when its “can benefit” check fails:

Prestige+0.05/month

Who can benefit (can_benefit) (4 lines of game script)

scope:artifact = {
	exists = var:relic_religion
}
faith.religion = scope:artifact.var:relic_religion

As written in game/common/artifacts/templates (small_religious_carving_template).

Counts as a holy relic for (is_holy_relic) (4 lines of game script)

scope:artifact = {
	exists = var:relic_religion
}
religion = scope:artifact.var:relic_religion

As written in game/common/artifacts/templates (small_religious_carving_template).

How it is made

Made only inside events; no scripted effect to call from the console.

Also created in event stewardship_wealth.6001.

Source: game/events/lifestyles/governance_lifestyle/stewardship_wealth_events.txt, common/modifiers (artifact_monthly_piety_1_modifier), common/artifacts/templates (small_religious_carving_template) and the English localisation, Crusader Kings III 1.20.0.3.