Education

Reflections (13.02)

Tilt the diamond ring to differentiate prong reflection from an inclusion.

Reflections (13.02)

Tilt the diamond ring to differentiate prong reflection from an inclusion.

Covered Inclusions are Common (13.03)

Hiding a diamond inclusion under a prong is common practice for a setter.

Covered Inclusions are Common (13.03)

Hiding a diamond inclusion under a prong is common practice for a setter.

Dark Field Illumination (13.04)

Locating inclusions in the diamond with a gem microscope's darkfield illumination makes it much easier.

Dark Field Illumination (13.04)

Locating inclusions in the diamond with a gem microscope's darkfield illumination makes it much easier.

Look for Hidden Inclusions (13.05)

Carefully look for hidden inclusions in mounted diamonds under prongs or bezels.

Look for Hidden Inclusions (13.05)

Carefully look for hidden inclusions in mounted diamonds under prongs or bezels.

A Contingent Offer (13.06)

A Contingent Offer (13.06)The best approach in a mounted buying situation is to make a contingent offer on the diamond based on the seller’s representation or presumed grade. Have the...

A Contingent Offer (13.06)

A Contingent Offer (13.06)The best approach in a mounted buying situation is to make a contingent offer on the diamond based on the seller’s representation or presumed grade. Have the...

Grading Color Accurately in a Mounting (14.01)

Grading color in mounted diamonds is very challenging.

Grading Color Accurately in a Mounting (14.01)

Grading color in mounted diamonds is very challenging.