Example images for rejected reason: Appears Dirty

These are actual images of scans that were rejected for 'Appears Dirty'.   The images shown below were taken from our Quality Check process.   If a scan appears dirty, it is recommended to clean the stone, glass, or camera lens and rescan it before saving to prevent delays in getting an approval.   If a dirty scan is saved, and then the stone, glass, or camera lens is cleaned and the stone is rescanned and saved again, they may both be automatically rejected for 'Duplicate' without us ever seeing the scans in our Quality Check process if the scans are sent to us at the same time.

There are five known reasons for a scan to appear dirty:
  1. Oil
  2. Dirt on the stone
  3. Dirt on the glass
  4. Dirt on the camera lens
  5. Static Electricity
These five reasons are broken up into three categories of example images below:

'Rainbowing' from Oil or Static Electricity

The images shown below were taken from Light View 6 of our Quality Check process.   While round cut stones are not as critical for rainbowing, they will be rejected if the rainbowing is excessive.   For all other shapes, any rainbowing severly alters the light performance scales and will be rejected.   A colored hue in Light View 6 is not the same as rainbowing.   Light View 6 may have a colored hue (see the two left marquise scans in the bottom row below with a pink hue), and this may vary with each BrillianceScope because it is associated with calibration.   We have seen hue colors such as white, grey, pink, purple, blue, and green.   Scans are not rejected for a hue in Light View 6 because it does not affect the light performance analysis.   The two marquise on the bottom left were rejected for the rainbowing, not the hue.



Dirt on the Stone Causing an Excessive Return of White Light

Dirt on the stone can cause all of the first five Light Views to look nearly the same, or it can make one or more Light Views almost completely white.



Dirt on the Glass or Camera Lens

Dirt on the glass or camera lens will cause blobs to appear on the scan images, usually in all six Light Views.   If blobs still appear on the scans after cleaning the glass and camera lens, the problem may not be caused by dirt;   In some cases, what appears to be dirt may actually be caused from an incorrect separation setting.   Sometimes it is not possible to visually tell the difference between 'Bad Separtion' and 'Appears Dirty' until some adjustments are made to the separation settings (Please refer to Explanations of rejected scans: Bad Separation in the Help file for further details).