The mermaid portion of this cameo pendant is made with your own preserved breastmilk. The background is fully customizable and can be made to any color request. Please visit the flecks and coloring page for more options. Sterling silver hardware adds 2-4mm around edges of the cameo gem. The sm cameo is a smaller sized pendant measuring 18mm x 25mm. The lg cameo is a larger sized pendant measuring 40mm x 30mm.