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How to Review and Understand Results with the Reveal Diamond Detector 2S

Learn how to interpret your Reveal test results, understand colours, and identify natural and refer diamonds; lab-grown ones and simulants.

After running a test with your Reveal Diamond Detector, it's important to know what the results mean. This guide will help you easily identify whether your stones are natural diamonds or refer stones which could be either lab-grown diamonds or diamond simulants.

What the Colours Mean

ColourWhat It Means
BlueNatural Diamond (confirmed)
Non-Blue (red, green, white, etc.)Refer – Could be lab-grown or simulant. Needs further review!

Natural Diamonds

Glow blue under UV Light.

Refer Samples

These samples could be either Lab-Grown Diamonds or Simulants

  1. Lab-Grown Diamonds (HPHT/CVD): Show non-blue colours and they may afterglow when UV is turned off.
  2. Simulants (e.g. moissanite, cubic zirconia):

Moissanite: Very dim or invisible under UV, no glow after UV is turned off.

Cubic Zirconia: Green halo with dark centre under UV, no afterglow.

When using the Reveal diamond detector, the colours you see in the “flou+phos” marks (on myreveal app) / Result on some desktop software versions help identify what kind of stone you have.

  • If you see blue, you’re likely looking at a natural diamond with blue fluorescence and no phosphorescence.
  • If the mark is red, check the fluorescence and phosphorescence: blue fluorescence and faint orange phosphorescence usually mean a natural diamond.
  • Intense turquoise fluorescence and turquoise phosphorescence suggest a refer, potentially an HPHT lab-grown diamond; non-blue fluorescence with any phosphorescence points to a refer, most probably a CVD lab-grown diamond.
  • If the mark and the fluorescence is non-blue and there’s no phosphorescence, it’s a refer, probably a CVD lab-grown diamond.
  • A green halo around a dark centre—with no phosphorescence—means the stone is a refer likely cubic zirconia. If there’s no colour in the marks, and the stone seems to disappear, it’s referred probably moissanite.
Flou+Phos MarkFluorescencePhosphorescenceLikely Stone Type
BlueBlueNoneNatural Diamond
RedBlueFaint OrangeNatural Diamond
RedIntense TurquoiseTurquoiseRefer (Potentially HPHT Lab-Grown Diamond)
RedNon-blueAny colorRefer (Potentially CVD Lab-Grown Diamond)
Non-blueNon-blueNoneRefer (Potentially CVD Lab-Grown Diamond)
Green haloGreen haloNoneRefer (Potentially CVD Lab-Grown Diamond)
No colourNoneNoneRefer (Potentially CVD Lab-Grown Diamond)

Image Modes on the Device

Tap the icon in the bottom right to switch between viewing modes:

  • Daylight: Regular lighting view—see the stone’s natural look.
  • Fluorescence: Shows how stones react under UV light.
  • Phosphorescence: Displays if stones glow after UV is turned off.

Use all three modes for the most accurate identification.

Daylight View

Sample Interpretation Guide

Fluorescence View

  • Far Right Column (Blue): Natural diamonds.
  • Second from Right (Intense turquoise): Refer-potentially Lab-grown (HPHT).
  • Center Column (Pink/Orange/Red/Yellow): Refer-potentially Lab-grown (CVD).
  • Second from Left (Very Dim/Invisible): Refer-potentially Moissanite.
  • Far Left (Green halo with Dark Centers): Refer-potentially Cubic zirconia.

Phosphorescence View

  • Natural Diamonds: Usually dark or very faint glow.
  • Lab-Grown Diamonds: May glow after UV is off.
  • Moissanite & Cubic Zirconia: No afterglow – they appear dark.

Summary

Stone TypeFluorescencePhosphorescence
Natural DiamondBlueDark or faint
Lab-Grown DiamondNon-blueGenerally, glows after UV
MossaniteVery dim or invisibleNone (dark)
Cubic ZirconiaGreen with dark centerNone (dark)

Pro Tip

Always switch between fluorescence and phosphorescence views to confirm your results and improve accuracy. ​

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