3D rendering is the 3D computer graphics process of automatically converting 3D wire frame models into 2D images with 3D photorealistic effects on a computer. wikipedia.org

3D computer graphics are works of graphic art that were created with the aid of digital computer and specialized 3D software. In general, the term may also refer to the process of creating such graphics, or the field of study of 3D computer graphic techniques and its related technology. wikipedia.org

3D modeling (also known as meshing) is the process of developing a mathematical representation of any three-dimensional surface of object (either inanimate or living) via specialized software. wikipedia.org

Computer-aided design (CAD), also known as computer-aided design and drafting (CADD), is the use of computer technology for the process of design and design-documentation. Computer Aided Drafting describes the process of drafting with a computer. wikipedia.org

Adobe Photoshop is a graphics editing program developed and published by Adobe Systems Incorporated. wikipedia.org

3D printing is a phrase used to describe the process of creating three dimensional objects from digital file using a materials printer, in a manner similar to printing images on paper. wikipedia.org

ZBrush is a digital sculpting tool that combines 3D/2.5D modeling, texturing and painting. It uses a proprietary "pixol" technology (see below) which stores lighting, color, material, and depth information for all objects on the screen. wikipedia.org

Rhinoceros (Rhino) is a stand-alone, commercial NURBS-based 3-D modeling tool, developed by Robert McNeel & Associates. wikipedia.org

V-Ray is a rendering engine that is used as an extension of certain 3D computer graphics software. wikipedia.org

Gemvision Matrix is a 3D jewelry design CAD/CAM software. It allows users design virtual 3D jewelry on-screen while generating a detailed color preview image that can be printed or emailed. Matrix then outputs all file types compatible with any CAM (Computer Aided Manufacturing) devices.

Jewelry is a form of personal adornment, such as brooches, rings, necklaces, earrings, and bracelets. wikipedia.org

A model, is a person who is employed to display, advertise and promote commercial products (notably fashion clothing) or to serve as a subject of works of art.