The mothers' pin consists of what I believe is a 4 leaf clover (correct me if I'm wrong) with the Alpha and Gamma letters on a Delta. On each corner of the Delta there is a small seed pearl.

I bought my mom that pin when I was initiated, and though she wears it often I had to consult the catalog to remind myself on how it looks like!

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A single seed...becomes a Rose of incredible beauty.

A single grain of sand...becomes a Pearl of great worth.

A single great idea...becomes a Century of success.

Go Alpha Gam!