16.8 x 12.7 x 6.1 cm (largest). A stunning large cabinet pair from a sliced and polished hollow sphere of coral - you can clearly see the pattern on the outside - that has been replaced or filled inside with botryoidal chalcedony. The lustrous botryoids have a gorgeous variety of color. They look like pearls. The hole in one side is really interesting. This is one of those unusual cases where biology meets mineralogy. This specimen is from the Hauck Collection.