Home of the Crystal Giant
The Taxonomies describe the crystal giant as and edge-case hybrid stone giant with exaggerated igneous facets, but this description is inadequate. The crystal giants are a race of ancient and distinguished pedigree. And if they are rarely encountered by mortals of the ordinary sort, it's because they prefer to live in their crystalline cities beyond the plane of fire.
A few, however, being of a solitary bent, may be found living in astral geodes, pocket Earth dimensions, and even large crystal deposits on the primary planes. Their disposition is not specifically evil, however, they are surprisingly quick to take offence, measuring the behavior of all races by their own skewed set of laws.
The home of a crystal giant is very perilous, yet even a poor outcast is likely to have a cache of gems, often of enormous size.