Icy Veins/Wowhead classic enchanting guide incorrect on Large Radiant Shards and Small Brilliant Shards?

On both Icyveins and Wowhead, the claim is that a level 49 rare will disenchant into a Large Radiant Shard. But this is incorrect, it gives Small Brilliant Shards instead. Level 45 rares however do disenchant into Large Radiant Shards.Anyone have a correct disenchanting guide?