This guide requires you to have an enchanting level of 125 or higher and to
have the Scarlet Monastery key, and of course to be level 55 or higher (You might be able to do this around level 50 but it might be hard so 55 seems like a good level).
Now the money making part, you go to Scarlet Monastery Armory and all the mobs should be Grey to you so you'll be able to sneak past them. Just don't go to close and watch out for the mage pats. Sneak to Herod and kill him and then DE the item he drops for a Small Radiant Shard which on my server sell for 6g each. All in all it should only take 2 minutes or so to sneak to him once you get the hang of it, then about 30 seconds to 1 minute to kill him,and then you run out and reset and repeat, enjoy.
And remember not to flood the market too much or the prices will drop.