exchange rate: vale vs small ingred?

[tc12]

Curious about exchanging vale <--> small shroud ingredients. Presently I have an extra completed signet stone but almost no funk/twig/fungus/pebbles. I have extra small (and med) shroud ingredients however. So I'm like to trade and wondering what's fair here.

TC

[tihocan]

Based on the AH I'd say that husk, petals and small bones have no value.
Twig > Funk > Pebbles > Fungus > Husk, Petals
For small ingredients I'm not sure but my guess it's similar to the large ones, so something like :
Scales > Stone, Arrow > Shrapnel > Chain > Bone
So I guess a fair trade would be a 1:1 ratio between ingredients ranked similarly, and adjusting the ratio otherwise.