This is a beautiful and well designed piece of jewellery. The enamel is subtle and interspersed with small diamonds. It was made in the Belle Epoque era, so named because the fashions at the time were so delicate and fine. Pieces such as this are rare in good condition. I doubt that this has been worn much. It is 15ct gold. In ancient Greek the word for butterfly is "Psyche", which translated means "soul". This was also the name for Eros' human lover and when the two figures are depicted they are often surrounded by butterflies. It would have been a gift of love.