Gold “Happy Birthday” Letter Pick Birthday Candles. Letter candles measure 8cm (3.25″) in height. Ideal for a gold themed birthday party. Quick and easy way to decorate any type of cake. Perfect for making that magical birthday wish, these birthday cake candles feature 13 individual Gold candles, that together spell out Happy birthday. Use them to instantly spruce up your celebration cake, whether its a traditional birthday cake or a batch of cupcakes.