Large onyx stone egg on base

Rare large stone egg. Polished onyx stone in an ovoid shape flattened at the base. Matching wooden base. The reflections of onyx are variable and in all tones, from beige to reddish brown and gray. A natural line on the side. Very good state; two mini tears noted, very barely visible and probably in the original stone. Stone known for its calming effect. Heavy and very stable object, with or even without the base. Dimensions 12 cm in height and 10 cm in diameter at the widest; base 7 cm x 7 cm.