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There are some special materials in Star Wars: The Old Republic that can only be obtained through specific methods, and can not be gathered or otherwise easily obtained. These materials are often very valuable, as they can craft valuable items or high-level equipment.
This guide will go through all the rarest materials in the game, and show you where they come from, including Legendary Embers, Solid Resource Matrixs, and Processed Isotope Stabilizers!
Icon
Material Name
Skill
Grade
Type
Notes
Exotic Isotope Stabilizer
Content
Level 65
Rare Material
Info: Tier 1 Exotic Crafting Material - Level 65 crafting, used in almost every crafting schematic.
Jawa Junk: x10 Scrap: Assorted Droid Parts (blue)
Dark Matter Catalyst
Content
Level 65
Rare Material
Info: Tier 1 Exotic Crafting Material - Level 65 crafting, but only for earpieces, implants, relics and modifications, and the Crystal of Nightmare Fury, which gives a buff in Master mode operations.
Jawa Junk: x8 Scrap: Jawa Junk (purple)
Strategic Resource Matrix
Content
Level 65
Rare Material
Info: Tier 1 Exotic Crafting Material - Level 65 crafting, including some really cool armor sets that are available to be reverse-engineered even by level 75 players.
Jawa Junk: x8 Scrap: Jawa Junk (purple)
Ancient Tome
Content
Level 70
Rare Material
Info: Level 70 top-tier crafting, can be bought from a vendor on Ossus for 100,000 Credits and 65 Relics of Ossus. All items crafted with these, with the exception of level 70 modifications, can also be bought directly from the Masterwork Vendor on Ossus, costing 27,500 credits and Champion status with Ossus Reputation.
Jawa Junk: Not available
Refined Isotope Stabilizer
Content
Level 70
Rare Material
Info: Tier 2 Exotic Crafting Material - Used in almost all level 70 crafting.
Jawa Junk: x12 Scrap: Assorted Droid Parts (blue)
Charged Matter Transubstantiator
Content
Level 70
Rare Material
Info: Grade 10 Crafting Material - Level 70 top-tier crafting for creating Masterwork items. All items crafted with these, with the exception of level 70 modifications and augments, can also be bought directly from the Masterwork Vendor on Ossus, costing 27,500 credits and Champion status with Ossus Reputation. Augments are the only relevant thing at 75, Superior Augment 46, are a good cheap alternative to level 75 augments.
Jawa Junk: x200 Scrap: Jawa Junk (purple)
Encrypted Memory Core
Content
Level 70
Rare Material
Info: Grade 10 Crafting Material - Level 70 top-tier crafting for creating augments. Can drop from Guild Conquest reward Augment Components Lockboxes for lvl 10-70 characters if you choose the box instead of an Encryption.
Jawa Junk: Not available
Iokath Recombinator
Content
Level 70
Rare Material
Info: Grade 10 Crafting Material - Required for crafting Dark Projects, this mostly-retired material can be bought from the vendor located near the Umbara flashpoint entrance on Odessan for 350,000 credits each.
Jawa Junk: Not available
Superior Resource Matrix
Content
Level 70
Rare Material
Info: Tier 2 Exotic Crafting Material
Jawa Junk: x10 Scrap: Jawa Junk (purple)
Void Matter Catalyst
Content
Level 70
Rare Material
Info: Tier 2 Exotic Crafting Material - Level 70 crafting for modifications only. These seem very hard to get these days - seem to drop from some Veteran Mode and Master Mode operations like Ravagers.
Jawa Junk: Not available
Processed Isotope Stabilizer
Content
Level 75
Rare Material
Info: Tier 3 Exotic Crafting Material - Abbreviated to Isos, this material comes from quite a few sources but mainly from Flashpoints and Operations. The more difficult Story / Veteran / Master mode, the more you will get. Used in almost all level 75 crafting.
Jawa Junk: Not available
Solid Resource Matrix
Content
Level 75
Rare Material
Info: Tier 3 Exotic Crafting Material - Abbreviated to SRM, this material is mainly earned through Conquest. Used for crafting higher-end level 75 purple and gold-bordered equipment, modifications and augments. They were unavailable in the game for a while but returned in update 7.0.2 to the Jawa Vendor.
Jawa Junk: x30 Scrap: Jawa Junk (purple)
CM-1337
Content
Level 75
Rare Material
Info: Grade 11 Legendary Combined Material - Combination of an OEM-37 and RPM-13, to craft the best (and very expensive) augments at level 75 available in the game
Jawa Junk: Not available
Legendary Ember
Content
Level 75
Rare Material
Info: Legendary Component - Used to craft the second-best augments in the game and item-rating 300-306 mods and equipment. Legendary Embers, which have a small chance to drop from rich crafting missions, and a high chance to drop from the special one-time wealthy crafting missions from datapads for any gathering skill. They also have a chance of dropping when you deconstructing item-rating 300+ gear and grade 11 slicing lockboxes. They can also drop from Ranked PvP reward boxes. Embers can be bought from the Spoils of War vendor on the fleet for 3,000 Tech Fragments each.
Jawa Junk: Not available
OEM-37
Content
Level 75
Rare Material
Info: Tier 3 Exotic Crafting Material - Drops from Master Mode Operations. Very expensive crafting material used to craft the best level 75 augments in the game. Players with 10,000 Tech Fragments can trade them in for an OEM-37 or RPM-13 in the Supplies section of the Fleet in a quest from a very small datapad at level 75.
Jawa Junk: Not available
RPM-13
Content
Level 75
Rare Material
Info: Tier 3 Exotic Crafting Material - Drops from the Weekly Group Ranked Warzone Lockbox. Very expensive crafting material used to craft the best level 75 augments in the game. Players with 10,000 Tech Fragments can trade them in for an OEM-37 or RPM-13 in the Supplies section of the Fleet in a quest from a very small datapad at level 75.
Jawa Junk: Not available
Retired Materials List
If you are a veteran player, you may also remember these materials. They no longer exist, and were automatically converted to one of the above materials.
Icon
Material Name
Skill
Grade
Type
Notes
Alien Data Cube
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Biometric Crystal Alloy
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Dioxatrene-11
Retired
Rare Material
Info: NO LONGER AWARDED, NO LONGER NEEDED FOR SCHEMATICS
Jawa Junk: Not available
Exonium
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Exotic Element Equalizer
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Molecular Stabilizer
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Baradium Flux
Retired
Rare Material
Info: NO LONGER AWARDED, NO LONGER NEEDED FOR SCHEMATICS
Jawa Junk: Not available
Mass Manipulation Generator
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Matter Transubstantiator
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Rakata Energy Node
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Self-Perpetuating Power Cell
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Synthetic Energy Matrix
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Universal Catalyst
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Vial of Stabilized Isotope-5
Retired
Rare Material
Info: REMOVED/REPLACED
Jawa Junk: Not available
Purple Materials List
Not all purple-bordered crafting materials are actually rare – these purple-bordered materials can be obtained by chance from crew skill missions, or from the Jawa Junk vendor.
Icon
Material Name
Skill
Grade
Type
Notes
Adaptive Circuitry
Slicing
Grade 8
Sliced Tech Part
Companions: Grade 8 Sliced Tech Part missions from Slicing (requires Slicing level 450)
Gathering: Rishi, Yavin 4, Oricon, Ziost
Conquest Decoration: Not available
GTN: Search lowest to highest
Jawa Junk: x8 Scrap: Jawa Junk (purple)
Advanced Neural Augmentor
Slicing
Grade 6
Sliced Tech Part
Companions: Grade 6 Sliced Tech Part missions from Slicing (requires Slicing level 350)
Gathering: Voss (also has Grade 5), Corellia, Dantooine, Ilum (also has Grade 7)
Conquest Decoration: Not available
GTN: Search lowest to highest
Jawa Junk: x6 Scrap: Jawa Junk (purple)
Agrinium
Underworld Trading
Grade 1
Underworld Metal
Companions: Grade 1 Underworld Metal missions from Underworld Trading (requires Underworld Trading level 1)
Jawa Junk: x1 Scrap: Jawa Junk (purple)
Alien Blood Sample
Diplomacy
Grade 1
Medical Supplies
Companions: Grade 1 Medical Supplies missions from Diplomacy (requires Diplomacy level 1)
Jawa Junk: x1 Scrap: Jawa Junk (purple)
Alusteel
Underworld Trading
Grade 2
Underworld Metal
Companions: Grade 2 Underworld Metal missions from Underworld Trading (requires Underworld Trading level 80)
Info: Grade 10 Crafting Material - Level 70 top-tier crafting for creating Masterwork items. All items crafted with these, with the exception of level 70 modifications and augments, can also be bought directly from the Masterwork Vendor on Ossus, costing 27,500 credits and Champion status with Ossus Reputation. Augments are the only relevant thing at 75, Superior Augment 46, are a good cheap alternative to level 75 augments.
Info: Tier 1 Exotic Crafting Material - Level 65 crafting, but only for earpieces, implants, relics and modifications, and the Crystal of Nightmare Fury, which gives a buff in Master mode operations.
Jawa Junk: x8 Scrap: Jawa Junk (purple)
Delta Wave Inducer
Diplomacy
Grade 9
Medical Supplies
Companions: Grade 9 Medical Supplies missions from Diplomacy (requires Diplomacy level 500)
Companions: Grade 9 Sliced Tech Part missions from Slicing (requires Slicing level 500)
Gathering: Zakuul and Darvannis
Conquest Decoration: Not available
GTN: Search lowest to highest
Jawa Junk: x9 Scrap: Jawa Junk (purple)
Solid Resource Matrix
Content
Level 75
Rare Material
Info: Tier 3 Exotic Crafting Material - Abbreviated to SRM, this material is mainly earned through Conquest. Used for crafting higher-end level 75 purple and gold-bordered equipment, modifications and augments. They were unavailable in the game for a while but returned in update 7.0.2 to the Jawa Vendor.
Jawa Junk: x30 Scrap: Jawa Junk (purple)
Sterilization Kit
Diplomacy
Grade 7
Medical Supplies
Companions: Grade 7 Medical Supplies missions from Diplomacy (requires Diplomacy level 400)
Jawa Junk: x7 Scrap: Jawa Junk (purple)
Strategic Resource Matrix
Content
Level 65
Rare Material
Info: Tier 1 Exotic Crafting Material - Level 65 crafting, including some really cool armor sets that are available to be reverse-engineered even by level 75 players.
Jawa Junk: x8 Scrap: Jawa Junk (purple)
Superior Resource Matrix
Content
Level 70
Rare Material
Info: Tier 2 Exotic Crafting Material
Jawa Junk: x10 Scrap: Jawa Junk (purple)
Synaptic Accelerator
Diplomacy
Grade 10
Medical Supplies
Companions: Grade 10 Medical Supplies missions from Diplomacy (requires Diplomacy level 550)
Jawa Junk: x10 Scrap: Jawa Junk (purple)
Thermal Regulator
Slicing
Grade 7
Sliced Tech Part
Companions: Grade 7 Sliced Tech Part missions from Slicing (requires Slicing level 400)
Questions or comments? Feel free to send me a message on Twitter @swtorista, Reddit /u/swtorista, Youtube Swtorista channel or by e-mail at the same name with gmail.com at the end. Have fun out there and may the Force be with you. ~ Swtorista
Questions or comments? Feel free to send me a message on Twitter 
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