Mila Kunis thinks having a baby is the "start of an incredible journey".
The new mum - who recently had Wyatt Isabelle with fiancé Ashton Kutcher - has revealed that she marked the occasion by collaborating with jeweller, Marina B, to create a "motherhood ring".
Speaking in a video shown on Gemfields website, Mila said: "Carrying a child and bringing new life into the world marks the start of an incredible journey.
"Throughout history, every culture has its own way of recognizing this extraordinary event, often with a gift for mother or child.
"Precious green emeralds are traditionally symbols of motherhood, wisdom and long-lasting love. But they are also a symbol for hope in many cultures."
The 18-carat yellow-gold emerald ring - which Mila helped to design - will retail for $4,800 (approximately just under £3,000) and the proceeds from the sale will go towards the opening of a maternity centre in Zambia.
The 31-year-old explained: "The proceeds from this collection of Marina B and Gemfields 'motherhood rings' will benefit the opening of Gemfields Nkana Health Centre, where four new wards have been built - a major undertaking that will have long-lasting benefits to the local community."
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