This asset has 3 crystal models and a Shader for them , with refraction, dispersion and smoothness settings inside the crystals, and many other parameters implemented here, works on standard render, LWRP and URP, does not support HDRP.

You can also use the shader for glass or diamond models.

There are also fast post effects, color correction, Flare bloom, Vignette and DOF that will allow you to replace the standard post effects in order to optimize your game.

The demo scene was set up in Linear space (color space), so it is desirable to open scenes in Linear space

The number of polygons in the models:

"Crystal" = 920 polygons;

"Crystal Big" = 6708 polygons;

"Crystals = 2282 polygons;