: These use a series of prisms to refract light.

: These use a high-density grating to split light evenly across the spectrum.

: Often produce a brighter spectrum, which is helpful for darker or more opaque stones.

Spectroscope | Gem

: These use a series of prisms to refract light.

: These use a high-density grating to split light evenly across the spectrum.

: Often produce a brighter spectrum, which is helpful for darker or more opaque stones.