how to preserve a leaf that dropped from my rubber tree plant?

Question

This leaf has special marking; I want to keep for as long as I can. thank you

Answer 1

I would use glycerin for a thick leaf. Here is how:

https://www.gardeningknowhow.com/garden-how-to/info/flower-drying-methods.htm

https://extension.umd.edu/sites/extension.umd.edu/files/_images/programs/hgic/Publications/non_HGIC_FS/FS556.pdf