How Does A Diamond Tester Work? - Pageo Jewelers

Skip to content Your cart

Your cart is empty

Continue shopping Order note Shipping Discounts Order special instructions Order note Save Estimate shipping rates United States --- Afghanistan Åland Islands Albania Algeria Andorra Angola Anguilla Antigua & Barbuda Argentina Armenia Aruba Ascension Island Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia & Herzegovina Botswana Brazil British Indian Ocean Territory British Virgin Islands Brunei Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Caribbean Netherlands Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo - Brazzaville Congo - Kinshasa Cook Islands Costa Rica Croatia Curaçao Cyprus Czechia Côte d’Ivoire Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Eswatini Ethiopia Falkland Islands Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Honduras Hong Kong SAR Hungary Iceland India Indonesia Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Kosovo Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macao SAR Madagascar Malawi Malaysia Maldives Mali Malta Martinique Mauritania Mauritius Mayotte Mexico Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar (Burma) Namibia Nauru Nepal Netherlands New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island North Macedonia Norway Oman Pakistan Palestinian Territories Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Islands Poland Portugal Qatar Réunion Romania Russia Rwanda Samoa San Marino São Tomé & Príncipe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia & South Sandwich Islands South Korea South Sudan Spain Sri Lanka St. Barthélemy St. Helena St. Kitts & Nevis St. Lucia St. Martin St. Pierre & Miquelon St. Vincent & Grenadines Sudan Suriname Svalbard & Jan Mayen Sweden Switzerland Taiwan Tajikistan Tanzania Thailand Timor-Leste Togo Tokelau Tonga Trinidad & Tobago Tristan da Cunha Tunisia Türkiye Turkmenistan Turks & Caicos Islands Tuvalu U.S. Outlying Islands Uganda Ukraine United Arab Emirates United Kingdom United States Uruguay Uzbekistan Vanuatu Vatican City Venezuela Vietnam Wallis & Futuna Western Sahara Yemen Zambia Zimbabwe Postal/ZIP code Calculate Discounts Apply Use code SUMMER25 for 25% off your order Discount code cannot be applied to your cart Shipping discounts are shown at checkout after adding an address

Estimated total

$0 USD

Taxes, Discounts and shipping calculated at checkout View Cart Check out
Search
Search Clear

Trending Searches

  • Engagement Rings
  • Diamond
  • Pearl
  • Charlotte
GOLD AT RECORD HIGH PRICE - Never before seen market, sell your gold now!
  1. Home
  2. News
  3. How Does A Diamond Tester Work?
How Does A Diamond Tester Work?

There are various ways to tell whether a diamond is real or fake; however, most methods available are not 100% reliable. But when using a diamond tester, you can quickly tell if you are dealing with an authentic stone. But how does a diamond tester work? Read on to find out.

What Is A Diamond Tester? 

A diamond tester is a portable, pocket-sized device used to test materials, such as diamond stones. It utilizes its thermal and electrical conductivity characteristics to show if the stone is genuine, depending on its physical properties. In addition, the tester includes a small, needle-like tip placed on the diamond to tell if it is real or fake.

How Does A Diamond Tester Work?

A diamond tester uses a heated needle tip to cause heat transference when placed on the stone. This is based on the tester's principle of operation, where different gemstones have varying degrees of chemical structure that allow them to conduct heat and electricity inversely. When testing, the tip is placed on the diamond, allowing the heat to pass through the diamond.

The device detects heat rate transfer through the stone, telling whether it is a natural diamond. Modern diamond testers use electrical conductivity to let you know if you are dealing with a genuine stone. If the diamond is real, the device will indicate it on display and give a one-off sound signal.

Are Diamond Testers Accurate

Diamond testers are perhaps the most accurate and reliable instruments to test the authenticity of a diamond. However, testers that measure thermal conductivity cannot tell an authentic diamond from moissanite because these gems are similar in heat transfer. Therefore, considering a diamond tester that gauges electrical conductivity makes the test more accurate in determining the genuineness of diamonds.

Conclusion

With several methods and ideas to tell if a diamond is fake or not, electrical conductivity diamond testers are more reliable and accurate tools to show the authenticity of diamond stones. Besides, the latest models have become more effective at detecting metal surfaces if you touch a metal instead of a diamond.

For more information regarding diamond testers, contact Pageo Fine Jewelers to learn more today!

Share Share on Facebook Share on X Pin on Pinterest Share on Whatsapp Copied Copy link What Is A Mine Cut Diamond? Next article What Is A Mine Cut Diamond?

You may also like

The "Secret" Diamond: Is a Hidden Halo or Under-Rail Right for You? custom engagement ring February 20, 2026Robin Mills

The "Secret" Diamond: Is a Hidden Halo or Under-Rail Right for You?

View details The Coastal Bride: Choosing an Engagement Ring for the Nantucket Lifestyle coastal bride February 20, 2026Robin Mills

The Coastal Bride: Choosing an Engagement Ring for the Nantucket Lifestyle

View details Beyond the Round Brilliant: Why New England Couples are Choosing Fancy Shapes custom rings January 21, 2026Robin Mills

Beyond the Round Brilliant: Why New England Couples are Choosing Fancy Shapes

View details Follow us on Instagram/Facebook @PAGEO_JEWELERS Visit us in Newton or Nantucket Follow us on Instagram/Facebook @PAGEO_JEWELERS Visit us in Newton or Nantucket Follow us on Instagram/Facebook @PAGEO_JEWELERS Visit us in Newton or Nantucket Follow us on Instagram/Facebook @PAGEO_JEWELERS Visit us in Newton or Nantucket Follow us on Instagram/Facebook @PAGEO_JEWELERS Visit us in Newton or Nantucket Follow us on Instagram/Facebook @PAGEO_JEWELERS Visit us in Newton or Nantucket Scroll to top

Tag » How Do Diamond Testers Work