Seems like there are models with a transparent top (low pressure part), ex: https://www.amazon.com/Premium-Crystal-Glass-Top-Stovetop-Espresso/dp/B07RLXQGW2/ ht

Seems like there are models with a transparent top (low pressure part), ex: https://www.amazon.com/Premium-Crystal-Glass-Top-Stovetop-Espresso/dp/B07RLXQGW2/ https://www.amazon.com/Premium-Crystal-Glass-Top-Stovetop-Es... You might want some blast protection if you use a completely transparent one due to the explosion risk and flying glass pieces.