Here is my N. rafflesiana. I ordered it from Extreme Plants two years ago. The most recent pitcher is about 12cm high.
When the pitcher gets older its peristome turns black/dark brown.
Bwt, it looked like this when I got it :
Rafflesiana is my favorite plant from my collection. Unfortunately I had to move it out of the terrarium since it was too big Im scared that it will wither in my room with no light compared to terrariums lights and humidity.
Im a lurker in this forum since I envy all of your plants!