• Illusion Settinga setting in which the surrounding metal's surface is shaped or cut to appear to be part of a diamond. This type of setting is used to enhance the size of small diamonds.

  • Inclusion - a foreign body or irregularity within a gemstone.

  • Inlay - placing shaped pieces of material into the surface of an object so that both the material and object are level.  A popular type of inlay is different colors of opal set into jewelry. 

  • Intaglio - a design carved into or below the surface of an opaque gemstone such as black onyx.  This type of carving shows the image in relief.  It would be the opposite of a cameo. 

  • Ideal Cut - the name given to the modern brilliant cut whose proportions and angles are designed to produce an optimum blend of brilliance and fire in a diamond.

  • Illusion Settinga setting in which the surrounding metal's surface is shaped or cut to appear to be part of a diamond. This type of setting is used to enhance the size of small diamonds.

  • Inclusion - a foreign body or irregularity within a gemstone.

  • Inlay - placing shaped pieces of material into the surface of an object so that both the material and object are level.  A popular type of inlay is different colors of opal set into jewelry. 

  • Intaglio - a design carved into or below the surface of an opaque gemstone such as black onyx.  This type of carving shows the image in relief.  It would be the opposite of a cameo.