Vintage Masonic "Rainbow Girls pin with the colors of the rainbow representing these virtues:

Red: Love in all its forms

Orange: The importance of religion in all its forms (based on love and forgiveness)

Yellow: Nature and its importance in daily life

Green: Immortality and the understanding of death is a part of life

Blue:  Fidelity and the importance of being honest and reliable

Indigo: Patriotism and citizenship 

Violet: Service to others which bind all the colors together

Measure 3 1/8" long.