A necklace made of faceted iolite, also known as water sapphire. This mineral stands out for its strong dichroism – an optical property whereby a mineral changes colour, in this case the intensity of the blue, depending on the viewing angle. Necklace length 52 cm. The largest stone has a diameter of 18 mm, the other beads are graduated from 7 to 12 mm. Silver clasp Ag 925/1000, clasp length 30 mm. Total weight 56.4 g.