I personally always mod glass/ceramic weapons into my personal games. Not every weapon, but glass/ceramic arrows and spears, glass axes, ceramic trap components (spiked ball, menacing spike, and some custom trap components), chert axes/spears/arrows.
Gemstone weapons always seemed very silly to me, but in high fantasy they are definitely a thing, and DF is pretty ridiculous at times, so IMO if it makes you happy, do it!
If you envision your dwarves having supernatural crafting skills (which of course they do), there are some advanced ceramic materials with amazing mechanical properties, they just require incredible control of composition and processing parameters. Fibril-type crystalline intersticial growth in highly densified ceramics can create ridiculously high-strength and impact/shock resistant ceramics, far more-so than what most people commonly can conceive from their experiences with earthenware/stoneware. Ceramic/Metal composite materials can also possess some pretty astounding strength for their stiffness.
Great, now I want to mod in a series of reactions to create warceramics from purified clays, sands, and stones. Now they will fear my dwarves wielding ceramic/metal matrix composite weapons and armor.