Drilled Tumbled Stones in special pre-formed free cut teardrop shapes are very popular stone pieces. Each stone is an individual and varies in shape and size to other stones.
Drilled hole 2.2mm, size of the stone about 2.5cm to 3cm
The terms "Calchedon" and "Carchedon" are first used by Pliny the Elder in his Latin Naturalis Historia in the 1st century AD. Which stones have been described here, however, cannot be clearly identified on the basis of the descriptions. Over "intermediate stages" like Calcedon, Calzedon, Chalzedon or Kalcedon the name changed to the today common Chalcedon.
Blue Chalcedony is the stone of the month in March 2023.