Is not actually a gem, but rather an Augmentation
MAGIC ITEM LORE ITEM AUGMENTATION ATTUNABLE
Augmentation type: 7 8
Slot: HEAD FACE EAR NECK SHOULDERS ARMS BACK WRIST HANDS FINGER CHEST LEGS FEET WAIST
Recommended level of 20. Required level of 5.
WT: 0.0 Size: TINY
Some links to help explain Augments: Basics of Augments How to insert / remove Augments Slot Descriptions Newer Slot Descriptions
Equipment with with augmentation slots available, example: https://everquest.allakhazam.com/db/item.html?item=70709
MAGIC ITEM ATTUNABLE
STR: +6 DEX: +3 STA: +6 CHA: +4 WIS: +6 INT: +6 AGI: +7 HP: +75 MANA: +75 ENDUR: +75
SV FIRE: +11 SV DISEASE: +14 SV COLD: +11 SV POISON: +14
Recommended level of 79. Required level of 75.
WT: 4.5 Size: LARGE
Class: WAR SHD
Slot 1, Type 7 (General: Group)
Slot 2, Type 11 (Crafted: Group)
Slot 3, Type 12 (Cultural: Raid)
Note the Slot 1-3, and the Type for each. Type is the key point, as the Slot # is just an enumeration (ordered number starting at 1 and going up for each addition slot). Type tells you the type of aug that goes into the slot (see the 3rd and 4th links above in references).
Then you find an Augment (one with the tag AUGMENTATION at the top of the item display, as in the above display of the Simple Defiant Bluestone item. Augments which list which slot types they fit in, 7 or 8 in the above example, and which equipment slots, HEAD FACE EAR NECK SHOULDERS ARMS BACK WRIST HANDS FINGER CHEST LEGS FEET WAIST in the above example. Since the Elegant Trooper Greaves are a LEGS item, and has a Slot Type 7 augmentation slot, you can put the Augment in that piece's armor in Slot 1. Refer to the 2nd reference link on how to add / remove augmentations.
Basically, when you add an augmentation to an item, you gain the stats listed on the augmentation to your item. The caveat here is, that the most restrictive portions of either an item or any of it's augmentations will be in effect. Thus, if you have a no level required or recommended twinkish item, and you put in a high level recommended augmentation, the combined item will have the high level recommended level attribute on both the item and the augmentation, even though the item didn't originally have that. A further example, is you may be able to put a Deity restricted cultural augmentation in the above Elegant Trooper Greaves, but if your Deity doesn't match the restriction, you won't be able to equip the item. And some combinations (such as minimum level requirements), you may be able to aug and equip, but will get no stats at all since the new required level restriction will be above your level.
All of this is what makes Augmentation so complex, and probably why I couldn't find a good overall guide to them. (Hint to Wiki designers :D )
I hope this explains it clearly enough.
Yther Ore. Edited, Feb 21st 2010 1:32am by Yther