These are really common on eBay. For something so cheap the devices are surprisingly sophisticated.
Any thoughts on the probe material and function?
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17 thoughts on “Inside a diamond tester. thermal conductivity”
  1. Avataaar/Circle Created with python_avatars carlu bambi says:

    I dare you to turn it on and touch the tip to your scalp ?????.

  2. Avataaar/Circle Created with python_avatars U.E. U.E. says:

    I don't buy the 37ยฐC of the tip. Your camera caught a larger area than just the tip and read an average.
    I had such devices in my hands (professional ones) and, nosy as I am, tried the temperature on the outside of my thumb or hand – it hurt a lot!
    You shouldn't use these for diamonds smaller than indicated in the description and shall not use it as the only indication method!

  3. Avataaar/Circle Created with python_avatars Alex De Lara says:

    hahah this is more finnicky than politics… i suppose it's basically what you said "it's just another tool on the arsenal…"

  4. Avataaar/Circle Created with python_avatars John Delaney says:

    The heatsink thing and the anodization is fascinating.

  5. Avataaar/Circle Created with python_avatars Chicken Permission says:

    they creep a lot.

  6. Avataaar/Circle Created with python_avatars Genaro Garcia says:

    HolalepidoporfaborqueinformeCuantoCuestaaparatoparadiamantesGracias

  7. Avataaar/Circle Created with python_avatars CelticLightning says:

    I own that one you are inspecting so I was interested in how it works myself. But without damaging it since I only used it 2 times and like to in future. If it legitimately works. Thanks!

  8. Avataaar/Circle Created with python_avatars Archive says:

    I know how it works.

  9. Avataaar/Circle Created with python_avatars Clinton Davis says:

    What kind of battery is that mine didnโ€™t come with a battery

  10. Avataaar/Circle Created with python_avatars mw10259 says:

    VERY NICE , BUT WOULD YOU WALK 500 MILE 500 MILES

  11. Avataaar/Circle Created with python_avatars Gyanendra Sharma says:

    Are the big stones (more then 50 0r 100 gram) may tested through this tester

  12. Avataaar/Circle Created with python_avatars Noel Herron says:

    I watch a lot of reviews on YouTube to hear about how bad something is. But I really enjoy it when Clive finds something that he likes.

  13. Avataaar/Circle Created with python_avatars Chris Strange says:

    Most people use these to check that the watch they've just bought does indeed have a sapphire crystal like the seller said it did.

  14. Avataaar/Circle Created with python_avatars WillFul says:

    Also the anodization of the heat sink is a big discussion in computer heatsinks companyโ€™s have spent millions on making a coating that isnโ€™t worse than bare aluminum.

  15. Avataaar/Circle Created with python_avatars Roholi says:

    Fascinating video, thank you.

  16. Avataaar/Circle Created with python_avatars James Barnousky says:

    IIIIICE

  17. Avataaar/Circle Created with python_avatars Brian Waiting says:

    Diamonds are a waste of $ for rings
    But are good at cutting stuff up.
    This new lab ๐Ÿ’Ž better be cheaper!
    Edit: my guess is the tips housing stabilizes the sensors thermal reading. But I would not trust it! Hardness scale exists ๐Ÿ™‚

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