Length of the longest side is 11.5 inches plus a chain with hook on each side of 3 inches making it a total of 17.5 inches.  Width of this part of the band is 0.90 inches.  These are kundan meenakari stones trimmed with a mix of small and large pearl white beads. 
The joined tikka part Is a length of 8 inches plus  a hook. Maximum width of the gorgeous tikka is 2 inches.
Kundan Meenakari 
Pearls beads 
Golden chain