Is there any way for a character with the Crystal Master prestige class and Vow of Poverty to use the class's embed gem feature without breaking the vow? The gem must cost 100 gp but it is destroyed in the embedding process so could they use a friend's gem in the same manner that they can consume a friend's potion or use a friend's spell components?
Embed Gem (Su): When the crystal master gains this ability, she adds another embedded gem to her body. She can embed up to five gems (see table below) -- one each in the arms, legs, and chest. Once a part of the body has a gem embedded in it, another gem cannot be embedded in that part of the body. The powers and restrictions on each gem are found below. The level restriction is the minimum level of crystal master needed to take this gem. Each type of gem can be embedded only once.
The gem itself must initially be unworked and nonenhanced in any way (in other words, it cannot have any magical or psionic properties). It needs to have a minimum value of 100 gp before it is cut. The crystal master needs to make a DC 15 Craft (gemcutting) check to successfully shape the stone for embedding.
If for some reason the crystal master's body is destroyed and she somehow gains access to a new body, she may re-embed any lost gems within the new body. The gems must be the same type as the originals and embedded in the same order.
"The gem is destroyed in the procedure since it fully integrates itself with the psionic character's body."