Systems, apparatuses and methods for diamond color measurement and analysis

A diamond color measurement apparatus comprising:

• a daylight-approximating light source;
• a surface for accommodating a diamond;
• a light detector positioned to detect light from said light source coming out at a specific angle from the pavilion facets of a table-down diamond, when such a diamond is accommodated by said surface,
• a diffuser;
• and
• an optical measurement device for measuring light detected by said light detector.

A diamond color measurement apparatus comprising:

• a daylight-approximating light source;
• a surface for accommodating a diamond;
• a light detector positioned to detect light from said light source coming directly from the pavilion facets of a table-down diamond, when such a diamond is accommodated by said surface;
• and
• an optical measurement device for measuring light detected by said light detector.

A diamond color measurement apparatus comprising:

• a daylight-approximating light source;
• a surface for accommodating a diamond;
• a light detector positioned to detect light from said light source coming out at a specific angle from the pavilion facets of a table-down diamond, when such a diamond is accommodated by said surface;
• a diffuser positioned outside the path of detection of said light detector;
• and an optical measurement device for measuring light detected by said light detector.

A system for diamond color measurement comprising:

• a surface for accommodating a diamond;
• a daylight-approximating illumination source for illuminating a diamond when the diamond is accommodated by said surface;
• a light detector positioned to detect light coming out at a specific angle from the pavilion facets of a tabledown diamond when the diamond is accommodated by said surface;
• and
• an optical measurement device for measuring light detected by said light detector.

A system for diamond color measurement comprising:

• a surface for accommodating a diamond;
• a daylight-approximating illumination source capable of illuminating a diamond accommodated by said surface;
• a light detector positioned to detect light coming out at a specific angle from the pavilion facets of a table-down diamond accommodated by said surface;
• a diffuser positioned between the illumination source and the diamond accommodated by said surface;
• and
• an optical measurement device for measuring light detected by said light detector.

A system for diamond color measurement comprising:

• a surface for accommodating a diamond;
• a daylight approximating illumination source illuminating a diamond accommodated by said surface;
• a light detector positioned to detect light coming directly from the pavilion facets of a table-down diamond accommodated by said surface;
• and
• an optical measurement device for measuring light detected by said light detector.

A system for diamond color measurement comprising:

• a surface for accommodating a diamond;
• a daylight-approximating illumination source capable of illuminating a diamond accommodated by said platform;
• a light detector positioned to detect light coming out at a specific angle from the pavilion facets of a tabledown diamond when the diamond is accommodated by said platform;
• a diffuser positioned between said illumination source and said platform;
• and
• an optical measurement device for measuring light detected by said light detector.

A system for gem color measurement comprising:

• a surface for accommodating a colored gem;
• a daylight-approximating illumination source illuminating a colored gem accommodated by said surface;
• a light detector positioned to detect light coming out at a specific angle from the crown facets of a colored gem when the gem is accommodated in the table-up position by said surface;
• a diffuser positioned between said illumination source and said surface;
• and
• an optical measurement device for measuring light detected by said light detector.

A system for gem fluorescence measurement comprising:

• a rotating surface for accommodating a gem;
• a light source for illuminating a gem accommodated by said rotating surface;
• a detector positioned to detect light from said light source coming out at a specific angle from the crown facets of a colored gem accommodated in the table-up position by said surface;
• a diffuser positioned between said light source and said surface;
• an optical measurement device for measuring light detected by said light detector.

A method of analyzing the color of a non-fancy-colored diamond comprising the steps of:

• illuminating a table-down diamond with a diffuse daylight-approximating light source;
• detecting the light from the light source coming out at a specific angle from the pavilion facets of the diamond;
• measuring the detected light with an optical measurement device;
• analyzing the measurements with an optical analysis mechanism.

A method of analyzing the color of a non-fancy-colored diamond comprising the steps of:

• illuminating a tabledown diamond with a diffuse daylight-approximating light source;
• detecting light from the light source at a plurality of angles within a specific angle range from the pavilion facets a diamond;
• measuring the detected light with an optical measurement device;
• and
• analyzing the measurements with an optical analysis mechanism.