These pearl stone chokers are made with real 18k Gold plating copper. The necklaces are around 16 inches, and comes on a adjustable extender. Extender is 2 inches. 

Size: Stone Around 2mm, Rice Pearls around 3mm, Round Pearl around 7mm

Material: Black Spinel, Magnesite, Mother of Pearl, Gold Plated Copper
 
For longer lasting, please avoid contact with perfumes, body oils, and other chemicals, including household cleaners