This 14K yellow gold Mateo N initial diamond necklace has a delicate belcher chain with an adjustable length and lobster clasp fastening. Crafted in the United States, this piece is strung with an emerald cut crystal pendant featuring a pavé diamond initial underlay and border. What does the N on this piece stand for? Our guess is nanosecond because that's approximately how long it took us to add to bag. Our name doesn't even begin with N.