Urban Decay Fool's Gold is a warm gold with a sparkle finish that is discontinued and retails for $20.00. In comparison, Natasha Denona Orium (251DC) is a warm gold with a metallic finish that is limited edition and retails for $29.00.
Natasha Denona Orium (251DC) is 85% similar — it is more shimmery, lighter, more pigmented.