The Tree of Life Pendent can be personalized with up to 5 charms.  Either Alphabet or Gemstone.  A-Z. Dark Red (small or large), Red (small or large), Emerald Green (small or large), Light Green (small or large), Dark Purple (small or large), Light Purple (large), Sapphire Blue (small or large), Light Blue (large), Diamond (large), Hot Pink (small or large), Light Pink (small or large), Teal (small or large), Light Teal (small or large), Golden Yellow (large), Black (large), Small Iridescent Silver or Gold Casing.

This Tree of life pendent is Size : 35mm X 40mm and made from Tibetan Silver.  According to my source it is also Lead Free and Nickel Free.