The Bee & Kim Celestial necklace collection is handmade from solid, fine silver 999 and hallmarked by the London Assay Office. They are available on either a sterling silver box chain in or 9ct gold diamond cut belcher chain in either 16" or 18". Pendant measurements: Star: h-20mm w-20mm d-2mm Full moon: h-18mm w-18mm d-2mm Crescent moon: h-20mm w-15mm d-2mm Chain width: Sterling Silver Box Chain: 1.3mm 9ct Gold Diamond Cut Belcher: 2.0mm