It happens, derped stuff a few times myself.
Thank you guys! Yeah, I had the gemstone in the inventory... not my brightest moment.
M3ntir something for Tinkerer. The "ask about the gem" dialogue option for Vixenatrix still shows after she announces her pregnancy & gives the gem to the MC. Dunno how long it's still there but I don't recall seeing it after she lays her eggs.