Mini GemDuos are a smaller version of the original two hole diamond shaped bead manufactured by Matubo. These GemDuo beads are Czech pressed glass beads measuring 6mm by 4mm with 2 parallel holes of 0.75mm and are packed in a 7.5 gram bag of about 110 beads. Their unique shape and sharp lines allow the beads to nestle closely together with barely any space between them.