White Mexican Crazy Lace Jasper 4cm Pendant + Thin Silver Tone Alloy Band
 
This necklet is about 4" in diameter, but expands to your neck size when placed around the neck. It should fit like a choker, and wraps around the neck comfortably. 
 
One size fits most. Armlets + necklets are easily adjustable when carefully stretched and bent a little at a time to fit your comfort. All materials are natural and made to last, combining new styles with vintage and ancient materials.