I am inclined to agree with you on this, Ethan. I'm currently 3D printing all three of the versions pictured above, as it always helps to be able to hold it.
This is a tricky prop to model and replicate because it can look so very different from different perspectives due to the transparency; we also know that there were at least two of them of slightly different sizes and shapes. It makes nailing down any one canonical version hard, so I have relied heavily on that single closeup composite as the best source of info we have. I believe towards the later seasons, the appearances converge on a single crystal. When I look at the other images in those later seasons I do get a slightly different feel than my current model gives, so that's why I'm thinking/hoping that maybe just to stretch the z axis a bit will do the trick. I shall have more to report soon!