Hot Pink Druzy Heart Stud Earrings on Titanium Posts. Beautiful heart-shaped stud earrings that are perfect for Valentines Day! 22 different styles to choose from! These earrings are made from a super lightweight resin with hypoallergenic titanium ear posts, great for sensitive skin. Approximately 12mm (a half inch) across. Securely affixed to posts with jewelers grade epoxy adhesive.