Breast milk pendants and gems were removed from the listings on craft retailer Etsy, when the website updated it's policy so that the sale of "body parts" was no longer allowed, (although hair and teeth are still ok).
However, this has not stopped entrepreneurial mums setting up their own websites to sell breast milk jewellery.
The "gemstone" in the ring pictured above is made from not only breast milk - but also "umbilical crumbs" and a lock of hair.
It was created by Vickie Krevatin, the owner of UK based breast milk jewellery company Mom's Own Milk (she adopted the American spelling 'Mom' to match the company's acronym).
She explains on her website her reason for selling producst made from breast milk:
"I am still breastfeeding my son and he's four years old," she writes.
"I've always wanted to have a memento of our very special bond and thought there would be lots of time to have something made.
"As he got older I was worried my milk would start drying up or he would self wean.
"So after having contacted both UK and US breast milk jewellery suppliers I was shocked that the waiting list was so long, or that they didn't even bother to get back to me about my order.
"So rather than wait around, I decided to give it a go myself. And what an enjoyable and rewarding process it's been."
To make the jewellery, mums are sent a couple of test tubes in which to collect samples of their breast milk to send to the company. These samples are then turned into a solid, through a process that is a "trade secret", shaped by hand into a design of your choice and encased in resin.
Here are some more examples of breast milk jewellery designs:
What do you think? Will you be ordering breast milk jewellery? Let us know in the comments below.