Butter Charm, charm with the butter. Salted or unsalted, your pick! 
 
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, yellow bronze and brass! Each charm is made to order, processing time is between 5-7 business days.