I have just got my latest Diamondium from D-Nail, thank you guys! I owned a pill shaped pillar, a couple spheres, and now a bullet shape and I have to say it's probably my favourite material as an insert. You do need to be precise with your parameters, but if you are, you will literally be rewarded with the tastiest dabs. Different materials stay hot longer, and Diamondium ranks up there. Maybe at the top, or second to monocrystalline SiC maybe, but miles ahead of other materials. If taste is important to you, it may be a good idea to grab a piece to try. I haven't regretted except shocking my first one, too hot, too wet. It's still intact for now but lesson learned. My new one, I am being HELLA careful with. It should last nearly forever, pass down to your kid stoner type thing. I haven't tried sapphire yet, but that's more brittle, or the mono SiC which is very tasty I heard. For durability, I think Diamondium probably better than Sapphire, Boro, or any that can shock or crack easily. Might have to try a few more shapes but for what I got currently, they all pair well to a lot of my quartz shapes. Pearls for buckets and autospinner, bullet and pillar for towers, slurpers, blenders, etc.. it is nice to have the options, even though pricey, if you care about taste, this will help. It can create darker residue at high temps though so keep that in mind, even super clean water clean rosin normally on a different material insert is like just slightly golden color change, but hot Diamondium can seem to darken the residue some. If I drop to low temps, this gets super tasty and doesn't change dark color as much, but the potential is still there for it to happen if you aren't on top of your temps. A friend said, drop the insert in, count to 10, and then go at it. I tried that timing method, it works pretty decent. But usually I start with it in and wait for it to cool down. Need to get to lower window for best tastes and a few reheats before total consumed, but very tasty overall and would recommend
