These are Caramella (white) hearts which begin with a base of white and then transparent red Murano Glass is applied. It gives the hearts their nice red colour. The size is approximately 13mm and is slightly puffy.
The earrings are made by hand crafting the headpin from sterling silver in a thicker wire than the usual manufactured headpins, for extra security. They are then finished with a 4mm Swarovski Crystal and sterling silver ear wire.