Name: Spinel

Gem: A white spinel

Appearance: [hider=Spinel's appearance]
[img]http://67.media.tumblr.com/2e5288e8ca3fefcea118dbf4cae3ebc8/tumblr_o9o1zp6TA91uks64ao3_400.png[/img][/hider]

Gem Placement: Her outer-right elbow

Gem Item: A large crossbow

Power: Under normal circumstances, Spinel body, hair, eyes and clothing (as much as gems have clothing) emit a pale glow, like a ghost.  With enough concentration, Spinel can suppress her natural glow and become transparent.
 
Other: Spinel was created without the ability to feel or understand emotion, and only operates on a vague sense of what she was created to do, which was to be a reconnaissance/sniper gem.