Natasha Denona Mint Frost is a warm aqua with a metallic finish that is limited edition and retails for $29.00. In comparison, CoverGirl Turquoise Glow (325) is a cool aqua with a frost finish that is limited edition and retails for $4.99.
CoverGirl Turquoise Glow (325) is 90% similar — it is less shimmery, darker.