As noted in my review of the new Guerlain Fard Métal Loose Iridescent Eye Shadow in Bronze Ora No. 02 (LE) ($35.00 for .02 oz.), it is remarkably similar to Rouge Bunny Rouge Loose Glitter Fire Drops in Caress of Mink ($23.00 1.8 grams or 0.063 oz.). When I say remarkably similar I do mean that they are nearly indistinguishable from one another.
Both shades are a taupe-lovers dream!
Top swatch Caress of Mink, bottom swatch Bronze Ora No. 02
Do you need both? Unlikely, but if you love high quality luxury loose eyeshadows in taupe- then you probably will want one of them.