Transformer necklace with enamel

A double-sided capsule made of yellow gold and sapphire glass is fixed on a chain with three levels of length, which is framed by a gold rim with colored enamel. You can put 4 movable gold numbers in the capsule at the same time, which for you are a symbol of something personal, very important and special. For example, numbers that will encode the number that has become the starting point for significant changes in your life.