Looking at the color, I think the big one is limestone, and the small one is quartzite, which has been washed away by water and has no edges and corners.

If they are all transparent, they are all quartzite, and different impurities in them cause different colors. As for bloodshot, it is caused by the difference in transmittance between impurities or crack fillers and siliceous bodies.

Chicken liver stone is definitely not. Chicken liver stone is more delicate than this, and it is not very transparent. During the Warring States period, it was often used to pretend to be red agate.

In fact, the landlord can break these two stones, and the red fresh section should be rough, without the delicate feeling of agate and strong graininess. If you break the gray one, if it is opaque, the dark gray one is limestone, and if it is very delicate, it should be agate. If there is hydrochloric acid dripping on it around you, it is limestone that bubbles.