I just got the curiosity today to know whether the gems that produce electricity non stop without an end exist, and I have found this site.

But I’m having doubts about it, thinking that it could be fake or true, and I need to know what’s you’re opinion regarding this.

Oh and, can the costumer order these types of gems as something for collection? I yes, can you share a link where to drive me to a site where I can order one of these gems?


1 Answer 1


Yes, pyroelectric gems exist. No, they don't produce electricity all the time. Pyroelectric gems can generate a certain amount of electric potential when cooled or heated.

To cite Wikipedia

The change in temperature modifies the positions of the atoms slightly within the crystal structure, such that the polarization of the material changes. This polarization change gives rise to a voltage across the crystal. If the temperature stays constant at its new value, the pyroelectric voltage gradually disappears due to leakage current (the leakage can be due to electrons moving through the crystal, ions moving through the air, or current leaking through a voltmeter attached across the crystal)

A full list of all piezoelectric minerals can be found at the website of the Mineralogical Society of America

And yes, you can buy them. Some, like Axinite, were used to remove hair and lint from objects.

There's no site like www.buypiezoelectricgems.com... So you should google them one by one and look for sellers. Or go to a gem fair.

  • $\begingroup$ And if I forgot to take with me the charger, and my battery of telephone went dead during very cold winter, it is possible to use these gems to charge the telephone by using the tempeture that is outside? $\endgroup$
    – Alex A
    Commented Nov 17, 2018 at 9:06
  • $\begingroup$ Are you MacGyver? ;-) how do you want to connect your phone to the gem? And what do you think an electric potential is? And how strong do you think it is? $\endgroup$
    – JulPal
    Commented Nov 17, 2018 at 9:13
  • 4
    $\begingroup$ @AlexA no, you cannot charge your phone with piezoelectric minerals in realistic conditions. $\endgroup$
    – Gimelist
    Commented Nov 17, 2018 at 10:06
  • 1
    $\begingroup$ @AlexA pyroelectric mens the rock produces an electric current when heated but the power is very low and to charge a phone you need a huge number of rocks connected in series so it is not usefull for charging anything. $\endgroup$ Commented Nov 17, 2018 at 18:43
  • 1
    $\begingroup$ @Alex A: No, a rock that simply produced electricity would be a perpetual motion machine. The electricity is produced by a change, which takes work. That is, if you squeeze or bend a piezoelectric mineral, it produces a charge while it's being squeezed. Stop squeezing, and the charge is static. $\endgroup$
    – jamesqf
    Commented Nov 18, 2018 at 5:48

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