<p>My theory is that Homeworld has many of he same gemsones that Earth does, so it's maybe similar to Earth itself(mineral wise)and they find canyons/ravines/mines etc and they make their Kindergartens there, and the technology "fertilizes" the gems then over time the gemstone develops into a Gem. That's my theory for most of the older gems before they had the Kindergartens, I think then when the planet was made, they were intellegent but very few, so they created the technology to "reproduce" and make new gems from the minerals on Homeworld. And then of course as they kept evolving into Modern Gems, they found new ways to make gems, probably cheaper and more efficent.
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