A watch crystal is a see-through cover that safeguards the face of your Cartier timepiece. It can be made from acrylic, mineral glass, or synthetic sapphire. Sofly assures you that we have what you require. If you are looking for an item that is not listed below, please email us at [email protected], we will try our best to find it! Get $5 off with orders over $50 with coupon: SOFLYGO.