Blue Calcedoine

Chalcedony is a micro-crystalline quartz group that includes Agate, Heliotrope, Carnelian, Chrysopace, Jasper, Onyx, Quartz and others. (Ref: " Le Grand Livre des Correspondances", Sandra KYNES)

Quality: A+

Light: Lunar

Water: Okay

Mohs scale: 6.5 / 7 out of 10