>"No one will shed a tear for him."
>"And so wept the fallen star, making rivers with its tears. Then, slowly, from the bitter water, something grew. It looked like glass."
>tears drip from the Knight's face when it first appears
Shadow Crystals are Titan tears. The Knight is part-Titan. The Knight was about to give Ramb a Shadow Crystal, i.e. "shed a tear" for him.