Gilashin beads ana yin su ta hanyar harbin yashi gilashi. Dangane da girman, ana iya raba beads ɗin gilashi zuwa beads na gilashi (gilashi nau'in beads nau'in gilashi ne kuma ana nufin ƙwanƙwasa masu ƙarfi waɗanda girman barbashi ƙasa da 1 mm) da ƙyallen gilashi. Dangane da amfani, ana iya raba shi zuwa ƙullun gilashin da ke haskakawa, ƙullun gilashin yashi mai fashewa, ƙwanƙwasa gilashi, da cika ƙullun gilashi. Daga cikin su, za a iya raba beads na gilashin haske zuwa kariyar kariya ta gilashin gilashin gilashi da gilashin gilashi; Bisa ga ma'anar refractive, ana iya raba shi zuwa maƙasudin refractive gabaɗaya da manyan ƙullun gilashi. Ma'anar refractive gabaɗaya tana tsakanin 1.5-1.64, kuma babban maƙasudin refractive gabaɗaya shine 1.8-2.2. Zaton cewa mafi dacewa da tunani shine beads na gilashi tare da ma'anar refractive na 1.93, wannan ma'anar refractive za a iya mayar da ita cikin gamsuwa zuwa haskoki masu kama da juna, don haka mafi girman ma'anar refractive ba shine mafi kyawun tunani ba.
