The tag pendant - a rectangular or dog-tag shaped piece with an engraved or decorated face - has become one of the more durable entries in the celestial jewelry trend. Rachel Zoe's version features a celestial motif engraved into the tag face with a CZ accent, suspended from a Singapore chain in rhodium over brass at 18 inches with extender and lobster claw clasp. The Singapore chain is worth noting: its twisted, interlocked links catch light continuously along their length, making the chain itself a visual contributor rather than a passive delivery mechanism. At 18 inches, the necklace sits below the collarbone - a versatile drop that works with most necklines.