ΔE 15.4, loose: different enough that you should pick on purpose. Gauss Blaster Green is a little lighter, more muted, warmer than Emerald.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Gauss Blaster Green is a little lighter, more muted, warmer than Emerald.
The same difference applies the other way round: Emerald is a little darker, more saturated, cooler.
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 Emerald on the colour wheel See Gauss Blaster Green on the colour wheel
All matches: Emerald equivalents · Gauss Blaster Green equivalents