The item 'crushed glass' can be made from 5 glass swords and a blue diamond, it's used to imbue the property 'enhance potions' on jewellery.
The item 'powdered iron' can be made from 20 ingots and one white pearl, it's used to imbue durability on shields.
I'm not quite sure which of these Kalzaketh is referring to, as he seems to have a mix of both
The soulstone fragment is made from crystal granules, which are in turn made from shimmering crystals. Those are only obtainable from shimmering effusion.