Make Gold from Jewelcrafting and Green Gems

Also see Make Gold with the Saronite Shuffle to earn more gold with jewelcrafting.

This method of making WoW gold is very easy, you dont even need to leave the city. The basic idea is to buy green gems and eternals from the auction house, then craft them into something you can make gold with. This requires that you have access to a jewelcrafter. I make around 200 to 400 gold from this but it entirely depends on your realms economy. Here's what i did:

1. I bought 40 Eternal Earths at a price of 3.3 gold each.
2. Then i purchased a total of 200 Bloodstone, Chalcedony, Huge Citrine and Sun Crystals at 1.25gold each. Any combination of those gems will work.
3. I then created a combination of Crystal Citrine Necklaces, Sun Rock Rings, Crystal Chalcedony Amulets and Bloodstone Bands.
   

Once you have made the items there are a few things you can do with them to make gold. What I did was just sell them to a vender. The cost of buying the eternals and gems from the auction house to make 200 rings/necklaces cost me 382 gold. From selling each item for 3.14g I made 628 gold. That's a profit of  246g, or 1.23g each.

Another option you have is to disenchant the items, and then sell the materials you get. You will primarily recieve Infinite Dust from disenchanting these, as well as the occasional Lesser Cosmic Essence and Small Dream Shard.

A third technique is to just sell the item in the auction house. You will need to check the auction house to see if you can make any profit by doing this. Keep in mind that if you chose to sell the enchanting materials or the items in the auction house, you shouldn't post too many at once as it will flood the market. This will result in lower demand and will force down the price of the items.