under the looking glass' enamel north star charm

This large oval shaped 'Under the Looking Glass' charm features a background of blue vitreous enamel with black stripes surrounding a gold and diamond north star, set under a cabochon white sapphire crystal. The back reads "Don't Forget Me", in Italian.
18k yellow gold, fine silver, vitreous enamel, diamond (0.01ct), sapphire
1 1/4" length, 3/4" width
measurements are approximate