Whether it's to celebrate a December birthday or you're drawn to the confidence and intuition the blue zircon-colored crystal represents, you can’t go wrong with adding the December Birthstone Interchangeable Charm to your necklace or bracelet. These are not your mom’s charms. Our new, interchangeable charm design lets you make the look all your own: swap out the charms or add symbols to make a charm necklace or bracelet that’s exactly your style. This blue zircon crystal charm is encased in gold or silver stainless steel so you can feel confident wearing it on repeat with its water, scratch and tarnish-resistant properties.