We may refer to these beautiful faceted cabochons as Red Onyx but it's true name is Red Chalcedony.
They are wonderful for rings and earrings as they are calibrated and flatback♥
WHAT IS RED CHALCEDONY:
The term chalcedony is derived from the name of the ancient Greek town Chalkedon in Asia Minor.
Chalcedony, which is found worldwide, is the name for a group of stones made of a microcrystalline or cryptocrystalline variety of quartz, which means the quartz crystals are too small to be seen without high magnification.
In jewelry usage, the name Chalcedony is usually applied only to the light blue translucent and waxy form. Other stones in this group are know as agate, jasper, petrified wood, bloodstone, petrified dinosaur bone, fire agate, tiger's eye, chrysocolla, chrysoprase, onyx, sardonyx, and carnelian.
Chalcedony is found in almost every color including: white, gray, black, brown, brownish red, orange, yellow, light to dark green, blue, lavender or, in the case of agates and jaspers, combinations of those colors.
Hardness: 7 on the Mohs Scale
Metaphysical properties of Red Onyx.