chalcedony[kal sed′'n ē, kal′sə dō′nē]
a type of quartz with a waxy luster and microscopic crystals often forming colorful, parallel bands
Origin of chalcedonyMiddle English and amp; Old French calcedoine ; from Late Latin (Vulg.) calcedonius, used to translated, translation Classical Greek chalkēdōn (only in Revelation 21:19), a precious stone ; from uncertain or unknown; perhaps
nounpl. chal·ced·o·nies also cal·ced·o·nies
A translucent to transparent milky or grayish quartz with distinctive microscopic crystals arranged in slender fibers in parallel bands.
Origin of chalcedonyLate Latin chalcēdonius, from Greek khalkēdōn, a mystical stone (Revelation 21:19), perhaps from Khalkēdōn, Chalcedon.