How do you get Stone of Scone with the console?

effect create_artifact_throne_scone_effect = { OWNER = root } — runs the scripted effect that makes it, for the character you play (debug mode).

What if the owner can't benefit from Stone of Scone?

They get Court grandeur baseline +3, Renown +0.02/month, Prestige +0.1/month instead.

Court artifact · Throne

Stone of Scone

IllustriousUniqueThe Royal Court

Stone of Scone is an illustrious throne artifact in Crusader Kings III: Court grandeur baseline +3, Renown +0.04/month, Prestige +0.25/month, Scots Opinion +5, Gaelic Opinion +5, Spearmen Maintenance -5%. Quality 100 and wealth 100; maximum durability 150, and it does not wear out. Made on 841.6.1 for Cináed Ailpin in Scone. At game start it goes to the holder of Scotland — needs The Royal Court. It needs The Royal Court. Patch 1.20.0.3, from game/common/scripted_effects/01_exp1_historical_artifacts_creation_effect.txt.

Quick answers (3)

What does Stone of Scone do in CK3?: Court grandeur baseline +3, Renown +0.04/month, Prestige +0.25/month, Scots Opinion +5, Gaelic Opinion +5, Spearmen Maintenance -5% (patch 1.20.0.3).
How do you get Stone of Scone with the console?: effect create_artifact_throne_scone_effect = { OWNER = root } — runs the scripted effect that makes it, for the character you play (debug mode).
What if the owner can't benefit from Stone of Scone?: They get Court grandeur baseline +3, Renown +0.02/month, Prestige +0.1/month instead.

A simple seat of red sandstone on which all monarchs of Alba have been crowned since King Kenneth I.

Effects

Court grandeur baseline+3
Renown+0.04/month
Prestige+0.25/month
Scots Opinion+5
Gaelic Opinion+5
Spearmen Maintenance-5%

Also gets random bonuses when it is made, from add_scaled_artifact_modifier_rulership_effect — the bigger ones at higher rarity.

For an owner who can't benefit from it

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

Court grandeur baseline+3
Renown+0.02/month
Prestige+0.1/month

Who can benefit (can_benefit) (11 lines of game script)

OR = {
	culture = {
		has_cultural_pillar = heritage_west_germanic
	}
	culture = {
		has_cultural_pillar = heritage_goidelic
	}
	culture = {
		has_cultural_pillar = heritage_brythonic
	}
}

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

History and who has it

Made on 841.6.1 for Cináed Ailpin in Scone.
Kept with the title Scotland from 858.1.1.
At game start: the holder of Scotland — needs The Royal Court.

How it is made

The game creates it with the scripted effect create_artifact_throne_scone_effect. In the console (how to open it), this gives it to the character you play:

effect create_artifact_throne_scone_effect = { OWNER = root }

Built from the effect's file; not run in the game by us.

Source: game/common/scripted_effects/01_exp1_historical_artifacts_creation_effect.txt, common/modifiers (throne_scone_modifier), common/artifacts/templates (throne_scone_template) and the English localisation, Crusader Kings III 1.20.0.3.