EntityQ747746· pop 20· linked from 36 articlesasterismSign in to savestar-shaped concentration of light reflected or refracted from a gemstoneConnectionsIndiaCountrySri LankaCountrylightEntityInternational Standard Book NumberEntityAncient GreekEntityPliny the ElderEntitypublic domainEntitygemstoneEntityrubyEntityCitrus × paradisiEntitysapphireEntityrefractionEntitytopazEntityreflectionEntitycorundumEntityOCLC, Inc.EntityhematiteEntitygarnet groupEntitytitanium dioxideEntityOxford University PressEntityCategoriesGemologyOptical phenomena