ColourPop Under the Sea is a cool green with a pearl finish that is limited edition and retails for $6.00. In comparison, Natasha Denona Golden Aquamarine (86P) is a warm aqua with a frost finish that is permanent in palette and retails for $29.00.
Natasha Denona Golden Aquamarine (86P) is 90% similar — it is more shimmery, darker.