--- title: "Good Vs Bad Lab Diamond Videos" description: "Not all lab diamonds are created equal. Learn what separates stunning, premium gems from dull, flawed stones, and why expert curation makes all the difference." canonical: "https://www.adadiamonds.com/good-vs-bad-lab-diamond-videos" last-updated: "2023-06-21" --- # Good Vs Bad Lab Diamond Videos > Not all lab diamonds are created equal. Learn what separates stunning, premium gems from dull, flawed stones, and why expert curation makes all the difference. ## Inside the Selection Process What we look for, shown through real comparisons. What Makes a Diamond Pass or Fail? We check for the following: - Make and light performance (patterning, shadows, overall sparkle, arrows, culet reflection, etc.) - Light leakage and empty facets - Accurate 4 C’s grades - Unnatural color tones of brown, gray, and blue - Phosphorescence (an orange glow in an HPHT stone after exposure to UV light) - Crystal material (blurriness, lifelessness) Each of these characteristics exists on a scale of good to bad and is not assessed as a binary. We have the absolute highest standards in the industry and only offer the best of the market. Follow us on instagram to see our diamond qc process in action. ###### Examples From Our Diamond Team Make and Light Performance ![Both are GIA-certified Excellent cut Left: large culet causing light leakage and reduced sparkle. Right: well-cut with strong brilliance.](https://content.adadiamonds.com/video/upload/v1773859091/IMG_6134_bulsti.mov) ![Fail: Bad bow tie - A bow tie is a dark, shadow-like shape that appears across the center of certain diamond shapes](https://content.adadiamonds.com/video/upload/v1773859890/IMG_7992_de0div.mov) Unnatural Color Tones ![Both diamonds are GIA-certified CVD. Left: brown-gray tone from rushed growth. Right: carefully grown and selected for brilliance.](https://content.adadiamonds.com/video/upload/v1693424197/767866593_left__poorly_grown_treated_cvd__f__color__right__gorgeous_treated_cvd__e__color_lab_diamonds_nmh5q6.mp4) ![Both are GIA-certified G color CVD. Left: lifeless from rushed growth. Right: bright and well-grown.](https://content.adadiamonds.com/video/upload/v1693424192/767869984_left__grayish_blue_d_color__right__bright_white_d_color_oval_lab_diamond_gkjd77.mp4) ![Both are GIA-certified E color, HPHT-grown. Left: gray-blue tinge from poor growth. Right: true E color with strong sparkle.](https://content.adadiamonds.com/video/upload/v1693424202/767875526_left__grayish_blue_e_color__right__true_e_color_lab_diamonds_s2zu4i.mp4) Phosphorescence ![Oval with Phosphorescence](https://content.adadiamonds.com/video/upload/v1773860562/IMG_6831_mfxdra.mov) Lab diamond quality may vary but the best lab diamonds are extraordinary. With the right selection, you’re choosing a diamond that’s not only beautiful, but built to stand alongside the highest standards in fine jewelry. ### See the difference and choose with confidence. Your diamond isn’t pulled from a virtual listing. It’s physically reviewed and approved before it’s ever listed so every option you see has already met a higher standard. [Find Your Perfect Diamond](/buy-lab-diamonds) --- Canonical URL: