Lepidolite gemstone beads in a teardrop shape with purple colouring.  The crystal beads are side drilled near the top and would be ideal to use with leather or cord as they have a large approx 2 mm hole.  

See more beads here

Size: 3.1 - 3.3 cm approx measured at the largest points
Weight: 9 - 12 grams approx  
Country of origin: Brazil 

Please note that you'll get a bead similar to the ones shown in the photo.