Reflectance

Reflectance is how shiny a part is. Unlike Transparency, however, it can go higher than 0-1.

Reflectance
Reflectance can be set to 0 and anything higher. Unlike transparency, though, it will have a difference after going past 1. If set to a number such as 10000, it will be easily seen in a dark ambient light. Also, at a high number, it can look like the sky in a way, which can be useful for making planets with a sky. However, if the reflectance is too high, transparency will not show. If it were at 10000, and transparency was set to 0.9, it would not be easy to see transparency.