Yes. People bank online, they transfer cash online, they even buy cars and airplanes online! Well, we use the same technology that the banks use to protect against the loss, misuse or alteration of your information, so you can order a diamond (or pearl necklace or gold bracelet, etc) without worrying about a thing. Your information is safe with us.
Also, when you're checking out - you can feel doubly secure if you see an "s" after the "http" in the website address. All browsers display this to let you know that you're in a secure environment thanks to our use of Secure Socket Layer (SLL) technology.
To be sure you're browsing secure pages, check the bottom of the Web page for the icon of a closed padlock. This icon appears in the latest versions of Internet Explorer and Mozilla Firefox to tell you that your information is protected.