Rose Quartz.
Model shown is wearing 12MM 14G captive ring.

Captive Jewelry is stainless steel, brand: 

Metal on crystal charm is NOT stainless, and contains nickel. 

It is recommended to keep crystal as dry as possible, and to clean with cloth provided. 

please note: weight is a factor for sure! I would personally rate this a 4/10, 1 being weightless, 10 being pulling down your lip with it.