Shop cake gem molds + cake gem boxes at Bakers Party Shop. Find silicone candy molds and smash molds. Find our smash molds and gem molds in a heart, dome, square and flower shape. Use our molds to make cake gems, mousse desserts and more. Coat the inside with chocolate and fill with all kinds of things. They are perfect for gift giving and we have a few great dessert boxes that fit them to give you a pretty presentation for your sweets.