Glass

Properties
Section	Solids
Spawn temperature	22°C
Heat Conductivity	60%
Relative weight	100
Gravity	0
Acid dissolve rate	0%
Flammability	0
State	Solid
Transitions
High temperature	above 1699.85°C
Misc properties
Allows neutrons to pass through
Source code

Glass, shatters when pressure changes too fast, lets through photons, and melts at exactly 1700C. Photons can be passed through glass to separate the different wavelengths of light, works perfectly when you make a prism. NEUT passing through will give off some PHOT of a similar color at an angle to simulate Cherenkov radiation. Converts ELEC to EMBR upon contact. GLAS is immune to ACID.