MAC Full Orbit #4 is a warm pewter with a metallic finish that is limited edition and retails for $21.00. In comparison, L'Oreal Gilded Envy (755) is a warm pewter with a frost finish that is permanent and retails for $7.99.
L'Oreal Gilded Envy (755) is 90% similar — it is more shimmery, warmer.