Where to get charms for obelisk? (lvl 3)

Hey, i'm a skiller who hosts lots of gilded altar parties, but i don't yet have an obelisk. I have 8 gold charms, which are from randoms, so that's no worry. I need 9 more crimsons, 10 greens, and 10 blues (i think.) Where should i lootshare barrage for the charms?

Soulwars=no.

 

Maybe Giant Rock Crabs?

 

yea giant rock crabs drop 3 at a time,

 

of what charms? i'm done with golds...

 

i believe 3 of every kind