>>121045921Absorbing water from your surroundings and releasing it later is not the same as creating genes.
An organism absorbs things and reshapes those things into new types of matter to grow and reproduce. It's why we eat and drink.
Unless a gem knows how to perfectly copy the genetic process and turn stuff they eat and drink into new material, and build it into a new being, then they can't reproduce. And IF they actually can do that, then there's nothing stopping them from literally just creating life how ever they want.
Want a tree? Absorb the nutrients need for one, and then 3D print a living tree where ever you want it. Same with a fully grown adult human.
They don't even need a womb. They can literally just start forming the being they want anywhere in their body and then cut/shape a hole to let it out.
Gems are not organic beings, so for them to be able to do something organic, like organic reproduction, they have to be able to copy the process. And if they can copy that process, nothing is stopping them form doing it for every single other type of organic being, outside of lacking the knowledge of how said organic being is build.
Hell if they can create matter from energy outright, nothing is stopping them form creating whatever they want when ever they want, just from standing in the sunlight for a little bit.