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uncommon

carnelian

chalcedony (SiO2)

carnelian, illustrated

The tell

Sunlight through the thin edge. Carnelian lights up a warm orange-red from the inside. Jasper does not.

Carnelian is chalcedony, so it is the same family as agate. A carnelian with bands IS an agate.

What it gets mistaken for

The facts

Put it on the shelf

Every stone on this chart is drawn and kiss-cut at three inches. The rarer the stone, the fewer exist: only 750 carnelian will ever be printed, then the run is retired.

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