Sandakada pahana, also known as Moon-stone, is a unique feature of the Sinhalese architecture of ancient Sri Lanka. It is an elaborately carved semi-circular stone slab, usually placed at the bottom of staircases and entrances. ... According to historians, the sandakada pahana symbolises the cycle of Sansāra in Buddhism.

Sri Lankan Sandakada Pahana - or moonstone - similar to those found in temples dating from the Anuradhapura period (c400BC-1000AD).

2 moonstones combined to create a digital full moonstone.