18x13 mm rectangle bead in tinted gemstone - Black Onyx x1

Onyx belongs to the Chalcedony family. This stone comes in many colors: transparent, white, black with white or brown traces.
To achieve a uniform black color, black onyx beads and stones are mass-dyed through a lengthy treatment process.

Please note that each stone is unique and may differ significantly from the photo.

Details:
Length: 18 mm
Width: 13 mm
Internal hole diameter: 0.8 mm

Sold per 1 piece.