• jherazob@beehaw.org
    link
    fedilink
    English
    arrow-up
    18
    ·
    2 days ago

    For a few years I’ve saved this pic from previous similar posts in various places, no need even for freaking diamonds

    • i_dont_want_to@lemmy.blahaj.zone
      link
      fedilink
      arrow-up
      6
      ·
      2 days ago

      Moisannaite gives the most rainbows, and I think they are gorgeous.

      But I do love the sparkle of diamonds, and sometimes prefer it. Fortunately synthetic ones are easy to come by.

    • MentalEdge@sopuli.xyz
      link
      fedilink
      arrow-up
      5
      ·
      2 days ago

      Is that a difference in the material, or is the Moissanite cut differently?

      If Moissanaite just does that, then damn, that’s pretty.

      • JasonDJ@lemmy.zip
        link
        fedilink
        arrow-up
        1
        ·
        edit-2
        19 hours ago

        Really? I (and I say this as someone who hates diamonds and the diamond industry) always thought it looked gaudy. Maybe that’s because most the ones I see are comically large ones that would cost more than an SUV if they were diamond.

        Like, as much as I hate diamonds, I think a modest diamond ring looks better/more tasteful than a giant moissanite one. More reasonably sized ones probably look better.

        • MentalEdge@sopuli.xyz
          link
          fedilink
          arrow-up
          2
          ·
          edit-2
          19 hours ago

          I honestly couldn’t care less about the actual rocks.

          But pretty colors are pretty colors.

        • MentalEdge@sopuli.xyz
          link
          fedilink
          arrow-up
          7
          ·
          edit-2
          2 days ago

          I’m asking about the light. The lightshow produced by a crystal is down to both the optical properties of the material, but also the geometry of how it was cut.

          The image is really cool, but it only demonstrates a difference if the moissanite was cut into the exact same shape as the diamonds.

          A prism doesn’t split light because of the material its made of, but because of its shape.

          • TonyTonyChopper@mander.xyz
            link
            fedilink
            arrow-up
            10
            ·
            2 days ago

            Moissanite has a marginally higher index of refraction than diamond so the “ideal” cutting geometry would be different. This looks like a misleading demonstration intended to market something. They appear nearly identical in normal conditions

            • MentalEdge@sopuli.xyz
              link
              fedilink
              arrow-up
              3
              ·
              2 days ago

              That’s what I was immediately thinking.

              Getting pretty colors out of a clear crystal is more about how it was cut, than what it’s made of.

              Unless it’s something like opal that produces lightshows through completely different optical effects.

          • UID_Zero@infosec.pub
            link
            fedilink
            English
            arrow-up
            5
            ·
            2 days ago

            Isn’t it both shape and material? The refractive index of the material is important in determining how much the light bends at the interface.

            • MentalEdge@sopuli.xyz
              link
              fedilink
              arrow-up
              3
              ·
              2 days ago

              Yes, but a clear crystal is a clear crystal.

              If you want to split light you can do what regardless of refractive index (as long as it isn’t zero), you’d just need to cut different angles and/or project the light onto a surface that’s closer/farther to get the same effect using a different material.

              • UID_Zero@infosec.pub
                link
                fedilink
                English
                arrow-up
                2
                arrow-down
                1
                ·
                2 days ago

                Yes, but a clear crystal is a clear crystal.

                No, different materials have different refractive indices, even if they’re both “clear crystals.” Maybe the examples given are very close in refractive index, but they still differ, therefore split light differently. https://en.wikipedia.org/wiki/List_of_refractive_indices

                I’m not saying it’s the entire difference, but it certainly comes into play. It could be that the more “explosive” light example is cut identically, but held slightly askew versus the others.

                Point is, it’s not just the cut that impacts the result.

                • MentalEdge@sopuli.xyz
                  link
                  fedilink
                  arrow-up
                  3
                  ·
                  2 days ago

                  That’s literally my point.

                  I’m saying you can’t tell the difference between two materials unless they are cut the same.

                  If they are cut differently to achieve the results you are seeing, you can’t tell whether the difference is because of the cut, or because of the material.

          • jherazob@beehaw.org
            link
            fedilink
            English
            arrow-up
            3
            ·
            2 days ago

            Ah, i misunderstood, yeah, there’s got to be some rigging in that demo pic now that you mention it, however if Moissanite is essentially a drop-in replacement for diamonds in jewelry that is cheaper and looks even slightly nicer, which seems to be the case, then all should be well, doubly so if it kills the profits of De Beers. I’d ask to see the contrast IN PERSON if i was shopping for rings today though, nothing beats that.