Butter Charm, charm with the butter. Salted or unsalted, your pick! Salted has a bite taken out of it (likely by one of my cats), while Unsalted doesn't. 
 
It can be customized with any gem in a location of your choosing. Just send me an email at info@oncebittenjewelry.com before purchasing and I can provide pricing, customization starts at $30. 
 
Available in sterling silver and brass! Each charm is made to order, processing time is between 5-7 business days.