i was able to make 2k gold in 1 day by selling the fiery weapon enchant (including my mats).
The easiest way i found to get the small radiant shards (and make a profit) was by tailoring Dreamweave gloves.
Dreamweave Gloves:
4 Bolts of Mageweave
4 Wildvine
4 Heart of the Wild
2 Heavy Silken Thread
I get 1 small radiant shard every time i disenchant one of these. if u go to the AH and buy mats for Dreamweave gloves, it'll run u no more than 11g [for all 4 gloves mats]. considering that small radiant shards go for approx. 5g each, ur making 9g profit.
but remember, 1 stack of mageweave makes 4 bolts, and so on..
just thought id share on of my little secrets .. ^_-
Edit:
Made a mistake in my wording.. by tailoring 4 Dreamweave gloves the mats for all 4 gloves will run u no more than 11g.