Metal: Silver, 10K white or yellow gold, 14K white or yellow gold Stones: Simulated gemstones Closure: Spring-ring Dimensions: 18" long cable chain Pendant Size: 21x21mm Personalization: Choose up to 4 stones Choose up to four birthstones. Use the letter key below to represent the months. Selection must be made using capitalized letters: A=January B=February C=March D=April E=May F=June G=July H=August I=September J=October K=November L=December Features: Personalized, Quick Ship Link Construction: Solid Setting: Prong Stone Cut: Round Metal Color: White Chain Length: 18 Inch Chain Width: .9 Millimeters Chain Construction: Cable Care: Wipe Clean Authenticity: Simulated Stone Metal: Sterling Silver Necklace Type: Pendant Necklaces Assembled in the US from Imported Materials ALL SALES FINAL Metal may be rhodium plated to enhance appearance and reduce tarnishing. Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.