Size is approximately 8-10cm in width. The size is an estimate of the overall size when the coral is blooming, not the skeletal size. If the coral is smaller than the frag or base, the size including the base may be listed. The size may change depending on the environment, such as water quality and lighting. Also, the appearance and color may change depending on the lighting. Please be aware of this beforehand. If any changes are observed in the condition of the organism after listing, we may delay shipping, exchange it for a similar item, or cancel the order. In principle, there is no guarantee for dead-on-arrival. Please understand that we cannot accept returns or provide guarantees based on the above.