Lethal Cosmetics Mirage is a cool aqua with a metallic finish that is permanent and retails for $6.00. In comparison, Natasha Denona Mint Frost (170SM) is a warm aqua with a metallic finish that is limited edition and retails for $29.00.
Natasha Denona Mint Frost (170SM) is 85% similar — it is darker, warmer.