Hmmm, if it's an innate 1st-level psion at young and juvenile ages it needs a minimum Int of 11 to manifest its 1st-level powers, so adding +1 Int per age (making all scores odd) is needed I think.
Added to Homebrews.
Note that I used the demon drake as a template, so many demon drake-specific bits are hanging around.
All ancient crystal drakes are known to have the ability to go ethereal once per week, and they have the ability to transport up to four of their clan members with them. These ancient drakes often use this ability to travel to and forage on the plane of elemental Earth, as well as to escape capture or worse.
Should it have the Earth subtype?
Planar travel (like gem dragons) gained at the ancient category?
Planar Travel (Su): Gem dragons have the innate ability to pass instantly between the Material Plane and the Inner Planes, where they often make their homes.