Burberry Shell (003) is a warm orange with a metallic finish that is permanent and retails for $29.00. In comparison, Natasha Denona Burnt Terracotta/Green (1) is a warm duochrome with a metallic finish that is permanent and retails for $28.00.
Natasha Denona Burnt Terracotta/Green (1) is 85% similar — it is darker.