Then it has the required ilvl to be crafted into a +2sk / 20fcr amulet.

Chances are, if you craft it, it won't get those mods. But you could.

As it is, the amulet's worthless.

Try this recipe with a lvl88+ character using the Horadric Cube:

Magic Amulet + Ral Rune + Perfect Amethyst + Any Jewel (it literally can be any jewel; the jewel has no bearings on the crafted amulets stats)