Glistening Gold vs Rust (Metallic)

How close are they?

ΔE 24.9, loose: different enough that you should pick on purpose. Rust (Metallic) is noticeably lighter, much more muted than Glistening Gold.

Can I use Rust (Metallic) instead of Glistening Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Rust (Metallic) is noticeably lighter, much more muted than Glistening Gold.

Can I use Glistening Gold instead of Rust (Metallic)?

The same difference applies the other way round: Glistening Gold is noticeably darker, 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.