Those are probably the best of carnelian. The reason being the carnelian comes with light color amethyst quartz. Compared to other common carnelian which mostly consists of red agate with tiny other chalcedony or quartz, those are rare!
Each piece is of different patterns.
About Carnelian:
Carnelian is a member of the Chalcedony family.
It is a silica mineral that takes its color from iron oxide.
Carnelian has a hexagonal crystal system and has a vitreous luster.
It comes in colors that are reddish brown.
The meaning of Carnelian is energy and creativity.