Krustallos describes a crystal-like brightness or appearance in throne-centered visions.

The two occurrences present krustallos in comparisons of luminous, clear appearance: a river is described as bright in Revelation 22:1, and a sea of glass is compared with it in Revelation 4:6.

1. Crystal-like brightness and appearance · dominant

   In Revelation 22:1, the accusative singular form occurs in the description of the river of the water of life; the APB renders it as a river “bright as crystal.” In Revelation 4:6, the dative singular form appears in the comparison of a sea of glass before the throne; the APB renders it “like crystal.”

   Revelation 22:1Revelation 4:6

In the Anselm Project Bible: The APB presents the term through comparison language: “bright as crystal” in Revelation 22:1 and “like crystal” in Revelation 4:6. These phrases indicate the verses' imagery rather than a fixed English equivalent.