Apparel & Accessories > Jewelry > Necklaces Jewelry > Necklaces in stock Mateo Diamond Initial Necklace in Yellow Gold/White Diamonds, No Size: Ready to ship in 2-4 weeks. Some things are simply better when they’re personalized—like stationery, podcast suggestions, and this diamond-encrusted initial necklace you’ll wear…forever. Rep yourself, your boo, your kid, or even your pup (dog moms, we see you).14k yellow gold 16″ chain Personalization: one letter.