how heavy is an ingot of magmatter

An ingot of magmatter isn’t something with a standard real-world weight, because magmatter is a speculative sci-fi material, not an established physical substance. In one commonly cited fictional source, its density is described as around 103310^{33}1033 kg/m3^33, which would make even a tiny ingot absurdly heavy.

What that means

If you imagine just 1 cm3^33 of magmatter, it would weigh about 102710^{27}1027 kg, which is far beyond any practical object on Earth. For comparison, that is many orders of magnitude heavier than a mountain, a planet, or even most stars’ smaller-scale mass concentrations.

Practical takeaway

So the honest answer is: an ingot of magmatter would be effectively unimaginably heavy if it had anything like the density described in the fiction. If you want, I can also estimate the weight for a specific ingot size, like 1 cm3^33, 1 liter, or a bar the size of a normal metal ingot.