A while ago I stumbled upon a post from CaféMakeup who compared NARS 413 BLKR eyeshadow with some eyeshadows of her stash (link). I notices a lack of dupes but NARS 413 BLKR actually reminded me a lot of a Catrice eyeshadow I had
So, just a quick post to compare two eyeshadows and to see if they are identical twins, fraternal twins, sisters or distant familiy
Swatched without primer:
The difference might be in the luminace on the NARS BLKR: it has a slightly metallic mermaidy glow whereas the Catrice Dolphins is, indeed, more dolphin-like.
More fraternal twins or sisters than identical twins, but the colour family is quite the same and for the price (& availability in European countries) I would recommend going for Catrice. Catrice retails around 2.54 EU & NARS 24.00 EUR.