• Jump to Main Content
  • Blink and you’ll miss it! 15% off sitewide. Use Code: DIAMONDDAYS | Shop Now. *Exclusions Apply For more details on this promotion, review our promotional offer details page

    do lab grown diamonds pass a diamond test?

    Lab grown diamonds are becoming increasingly popular for their fiery sparkle, exceptional quality and ability to maximize your budget. But do these stunning gems pass the same tests used to measure the quality of natural diamonds? Here’s how lab grown diamonds stack up to their natural counterparts.

    can a jeweler tell that a diamond is lab grown?

    Developed in dedicated facilities, lab grown diamonds possess the exact same chemical properties (i.e. pure crystallized carbon) and visual characteristics as natural diamonds that are mined from the earth. Depending on the size of the stone, lab grown diamonds can take up to a month or more to create. Jewelers can tell that a diamond is lab grown thanks to microscopic inscriptions that identify them as such. Without highly specialized equipment, however, it isn’t possible to tell whether a diamond was naturally mined or grown in a lab.

    do lab grown diamonds pass a diamond tester?

    Because diamonds are fine conductors of heat, they are tested for authenticity using heat resistance testers. Thermal Conductivity and Electrical Conductivity are the two types of testers used.

    Helzberg Diamonds uses Electrical Conductivity to test diamonds for nitrogen, which forms naturally while the stone grows in the earth. However, since certain lab grown diamonds are created from high quality diamond seeds, they may contain less nitrogen as well as trace amounts of boron. This can sometimes cause a false negative. This doesn’t mean the diamond isn’t real; lab grown diamonds are still physically, chemically and optically identical to natural diamonds.

    Diamond testers can be misleading. This is why our lab grown diamond center stones are graded by an independent, 3rd party lab (GCAL) to confirm they are, in fact, real diamonds.

    frequently asked questions

    are lab grown diamonds as hard as real diamonds?

    +

    are lab grown diamonds as strong as real diamonds?

    +

    more advice

    about lab grown diamonds

    Everything you need to know about diamonds created in a lab.

    all about natural diamonds

    What makes a natural diamond so special?
    Let’s find out.

    the 4cs of a diamond

    Find out how a diamond’s cut, color, clarity and carat weight impact it’s quality.