Tanzanite Facet Rondelle Loose Beads 3mm-5mm (11) 11 Loose Genuine Tanzanite Rondelle Beads 3mm to 5mm diameter, sizes, 2mm thn Tiny hole use 0.013" wire or thinner Tanzanite has different colors in different lights In daylight these are very nice blue, under photo lamps some have violet blue color