How To Use Your Diamond Tester?

Article published at: Aug 2, 2025
How To Use Your Diamond Tester?

How to Use Your Diamond Tester: A Quick Guide

Make sure your shine checks out. Here's how to use your diamond tester to verify authenticity like a pro:

 

Step 1: Power Up

  • Insert the battery
  • Turn it on and let it warm up for a few seconds until the ready light is on.

Step 2: Set the Sensitivity

  • Adjust the level based on the size of the stone (larger diamonds = lower sensitivity).
  • Our tester have a guide — follow it based on carat size.
  • Rule of thumb: set the level at 3-4 for 1ct diamond

Step 3: Clean the Stone

  • Wipe the diamond gently with a cloth to remove oils or residue.
  • A clean stone gives a more accurate reading.

Step 4: Hold Properly

  • Hold the tester like a pen.
  • Make sure your hand is touching the metal part (usually on the back or side) to ground the circuit.

Step 5: Test the Stone

  • Gently place the tester tip perpendicular to the diamond's surface.
  • Apply light pressure — don't jab it.

Bonus Tips:

  • Always test one stone at a time.
  • Don’t test mounted stones from the side — test from the top (table).
  • Avoid metal settings — touching them may affect results.
Article published at: Aug 2, 2025

Leave a comment