When I bought these beads, I was told they were Fire Cherry Quartz.,   Whatever they are, these beads are beautiful with a bright peach or pink color.   Quartz is known as a powerful healing and energy amplifyer. This 9.5 inch Necklace collar is for decorative purposes only.  It is not to be used as a regular collar. Never attach a leash or tags to this necklace.  This necklace is colorful and will bring some bling for your dog.