Mechanically-speaking, Gnomes in Pathfinder: Domain are identical to same race found in the Pathfinder Roleplaying Game p23. You can also find Racial Information on them on the Pathfinder SRD Website.
XP Cost: 10,000
Tulun Gnomes: Descended from a race known as the Nix, Gnomes chose to exist above ground where they practiced not only magic but later invention. Sharing a curiosity similar to the Halflings (but with more of a desire to build than the wanderlust that grips the Halfling people), Gnomes are always at the forefront of invention and pushing the boundaries of what can or cannot be done. In this manner they get on very well with Dwarves; the Gnomes tend to design and test the technology whereas the Dwarves build, tweak and perfect it. Where Gnomes and Dwarves differ is in their use of magic: most Dwaves see magic as just another tool to accomplish ends whereas Gnomes see it as much as a expression of creativity as it is a tool to shape the world around them. They will often build incredible devices that are so risky to use that the dangers of doing so almost outweigh the benefits should they work. To a Gnome this is simply just another factor be accounted for. It is Gnomes who are responsible for the majority of technological advances over the last few thousand years and these long-lived people are the ones who made the first prototype magitech devices: items which combined magic and technology for the benefit of the user.
Gnomes understand the importance of using everything at their disposal and that includes religion: though it would seem to be counter-intuitive to the way they handle life Gnomes are actual a quite spiritual people and revere The Twelve as much as any race, especially Chonna, God of Industry & Progress.
Gnomes have adapted fully to life above ground, and are most often found in the company of Humans, who seem very accepting of their ways. The house of a Gnome seems baffling to non-Gnomes, but their chaotic way of life makes perfect sense to them – even if it looks like a mess to everyone else.
Place of Origin: Gnomes used to share the underground with the other subterranean races, but since leaving for the surface most live among Humans, Dwarves, Halflings and Elves in Enotia.