Planes of Power Jewelcrafting Guide
Jewelcrafting is most popular in EQ amongst Enchanters since they are one of the only classes capable of Enchanting Bars as well as other neccessary items that are used in this profession. This isn't to say that the Tradeskill is pointless to level for non Enchanters, just that it will be much harder and generally more costly.
Once the Gates of Discord expansion pack goes live there's an alternative method to raising every Tradeskill in the game to 54. I believe these quests to be a waste of time, however, they teach you recipes that can't be learned anywhere else and for that reason must be done at least once to reach 350 Jewelcrafting. If you're interested in learning more about the GoD Tradeskill Quests then follow the link provided.
Jewelcrafting 1 - 21
Speak with your Guildmaster
(Direct Route) 
Electrum Malachite Bracelet 21 - 74
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Electrum Bars as well as Malachite. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Electrum Bar
Malachite
(Alternative Route) 
Electrum Jasper Earring 74 - 92
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Electrum Bars as well as Jasper. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Jasper
(Direct Route) Jaded Electrum Bracelet 74 - 106
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Electrum Bars as well as Malachite. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Jade
(Direct Route) Gold Malachite Bracelet 106 - 146
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Gold Bars as well as Malachite. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Gold Bar
(Direct Route) 
Golden Topaz Earring 146 - 183
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Gold Bars as well as Topaz. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Topaz
(Direct Route) Fire Emerald Golden Bracelet 183 - 202
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Gold Bars as well as Fire Emeralds. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Fire Emerald
(Direct Route) 
Rose Platinum Engagement Ring 202 - 242
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Platinum Bars as well as Star Rose Quartz. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Platinum Bar
Star Rose Quartz
(Direct Route) Platinum Opal Engagement Ring 242 - 263
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Platinum Bars as well as Opal. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Opal
(Direct Route) 
Platinum Ruby Veil 263 - 279
Jeweler Nonny located at the Small Bank in the Plane of Knowledge will sell both Platinum Bars as well as Ruby. Many other vendors sell these items too but he's the most universal vendor I know. He also sells many of the materials used for future combines as well.
Ruby
Black Sapphire Velium Necklace 279 - 287
Both items that you need to complete this combine are difficult to come by. First up the Black Sapphire is an uncommon gem drop from high level enemies throughout the game. The Enchanted Velium Bar comes from a Velium Bar that's purchased in Thurgadin and enchanted by an Enchanter.
Black Sapphire (EQ Traders)
Enchanted Velium Bar (EQ Traders)
Platinum Blue Diamond Tiara 287 - 295
For this combine you'll need a Blue Diamond which is a rare world drop off high level enemies as wel as an Enchanted Platinum bar. To get a platinum bar enchanted you'll need an Enchanter with the appropriate spell.
Blue Diamond (EQ Traders)
Enchanted Platinum Bar (EQ Traders)
Additional Information
- If you choose to use a Draught of the Craftsman you'll have enough juice to max out two Tradeskills usually. So come prepared with a lot of materials before popping a pot!
- If you don't see any materials that you need listed in The Bazaar setup a Buyer on a day when you don't plan on playing much to buy the items you need. Mention in general chat what you're buying (and even pay double what the other barters ask to get peoples attention if you want). Maybe someone who is killing in the zones and reading general will offload their loot to you.
- Aside from the uses mentioned above it's useful for every player to max out all of their Tradeskills for tangible useful benefits. You can only acquire things like Artisan's Prize and Sacred Prayer Shawl of the Duke from maxing out your Tradeskills. Those of you whom are wondering if this is all even worth it, well now you know.
- Under "General" in the AA window get the Salvage AA as soon as you possibly can, preferably before you start raising all of your Tradeskills. It'll save you a lot of plat.
- Every Tradeskill gets an item called a Tradeskill Trophy introduced in the Prophecy of Ro expansion pack. If you'd like to learn more about them prior their introduction then follow the link provided. Here is a list of all 6 quests for the 
Jewelcrafting Trophy.