Reverse set stones give a piece extra dimensionality and sparkle. These earrings by Italian (though now based in California) designers A & Furst (husband and wife Carlo Antonini and Kiki Furst) are wonderfully lively. Set with semi precious stones (in this case, prasiolite, amethyst and blue topaz with contrasting stones in emerald, ruby and sapphire) they retail in the vicinity of USD $2500-$3000. A really unique alternative to traditional diamond stud earrings.