For adults ponies Swarovski SS12 gems fit well, or if you're searching by size, 3mm-3.2mm gems fit.
For babies I'm still searching, but I believe that 1mm-1.2mm gems fit.
The colours used for G2s are : Pink, Amethyst, Sapphire, Peridot, Light Pink, Light Sapphire Blue and White
For babies I'm still searching, but I believe that 1mm-1.2mm gems fit.
The colours used for G2s are : Pink, Amethyst, Sapphire, Peridot, Light Pink, Light Sapphire Blue and White