Thai Constellations don't revert. The variegation is built into their genetic makeup because they're engineered by humans and don't exist in the wild. Not the case for 'proper' variegated monstera (albo borsigiana). ... If you buy a baby monstera it MIGHT turn out to be variegated.

Can reverted variegation come back?

Once a plant reverts back to green it is not possible to again reverse it back to variegated colorings. Variegated plants will have limited amounts of chlorophyll in their leaves because of the lack of green coloring. Less chlorophyll in a plant equals less energy, which is needed for photosynthesis.

Why is Thai constellation so expensive?

Called Thai Constellation, it's fitting because its popularity and price is skyrocketing. The marble colouring caused by a lack of chlorophyll is a rare mutation, the more of it, the more it's worth. Andy Roy from the Oxley Nursery said the craze for them is "unprecedented". "We've seen nothing like it before."