You're totally a Gemini! Show your pride with the Lulus What's Your Sign? 18k Gold Gemini Necklace! A dainty, 18k gold plated chain holds a matching engraved astrology coin pendant featuring the word inGEMINIin and the corresponding symbols. Lobster clasp closure. 19in. long. 18k gold plated. Balance man made materials. Imported. Lulus / What's Your Sign? 18k Gold Gemini Necklace.