Okay. I'm only really expecting a bit of trouble with the plant spell because I think the scope we need is far more than just preserving a single flower. I imagine a "gentle repose for plants" might be easy to find but only for very small volumes, so it may take some modification to be suitable for Aiden's idea.

Spellcraft with investigative mind:

(1d20+16)[31] or (1d20+16)[36]

And then for the gem cutting: (1d20+23)[42] using both crafting buffs.

What will be the total cost for the gems and scribing these spells, by the way?