Switch-It Gems 12mm Halo Pendant Necklace 12 Interchangeable Simulated Birth Months 925 Sterling Silver Guaranteed Authentic from the Switch It Gems designer line 18 inch Chain in a matching metal will be included All original Switch-it gems products come with a free limited Lifetime Warranty. Additional Stones: (cubic-zirconia, Shape: round-shape, Color: Colorless.)