Aqua Chalcedony .925 Sterling Silver Necklace .925 Sterling Silver stamped on bail of pendant and lobster clasp of chain Pendant including bail is just about an inch from top of bail to bottom of heart. See pictures with tape measure Pendant is approx .0.65” by 0.65” smaller pendant Pendant comes on a 16” .925 Sterling Silver Snake Chain ***if you prefer an 18” chain please let me know via message at time of purchase or pendant will come on a 16” chain, thank you*** Gauge: 020, Width: 1 mm, Made in Italy Some pictures enlarged to show detail Different lighting can alter appearance of color slightly