ΔE 14.3, fair: the same colour family, but not a straight swap. Granite Stone is a little darker, much more muted than Terminatus Stone.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Granite Stone is a little darker, much more muted than Terminatus Stone.
The same difference applies the other way round: Terminatus Stone is a little lighter, much more saturated.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Terminatus Stone on the colour wheel See Granite Stone on the colour wheel
All matches: Terminatus Stone equivalents · Granite Stone equivalents