Mila Kunis is speaking about motherhood for the first time since she and fiancé Ashton Kutcher welcomed their baby girl Wyatt Isabelle Kutcher into the world almost a month ago on Sept. 30.

The 31-year-old "Black Swan" actress recently designed an emerald "motherhood ring" in order to support moms in Zambia.

Kunis designed the ring with jeweler Marina B. The piece features an 18-karat yellow-gold band and gorgeous emerald stone.

The proceeds from the motherhood ring will go towards building maternity center near the Gemfields mine in Zambia, where each ring's emerald will come from. 

In a video describing the project, Kunis talks about the joy of motherhood.

"Carrying a child and bringing new life into the world marks the start of an incredible journey," says Kunis, who is a global ambassador for Gemfields. "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 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," explained the actress. "[It's] one more tool to help them grow and thrive in the land around their Gemfields mines."

Now that Kunis and her fiancé Kutcher are experiencing parenthood for the first time since the birth of their baby girl, how is the couple handling domestic life?

"Ashton is already mentioning baby No. 2," the source told E! News on Friday. "Mila laughs and tells him to slow down! But she wants another baby and to have it close to Wyatt's age so they can be close."

The new family is reportedly having a blast prepping for the holiday season, including Halloween.  

"Mila and Ashton are super excited it's Halloween and they get to dress up baby Wyatt. They think it's hilarious and are putting her in all kinds of baby costumes and outfits," said the source. "It's their first holiday as a family and even thought Wyatt is barely a month old, they are stoked!"