ColourPop Ringlet is a cool fuchsia with a sparkle finish that is limited edition and retails for $6.00. In comparison, Melt Cosmetics Ultraviolet #2 is a cool fuchsia with a glitter finish that is limited edition and retails for $22.00.
Melt Cosmetics Ultraviolet #2 is 85% similar — it is more shimmery, darker.