No - we don´t made a mistake, the specimen is really almost 24cm tall and even developed as floater! I saw lot of Aragonite from the locality, most times dull or ugly - sometimes attractive and relevant only for the locality. I have to note, that it is horrible difficult to show luster on white minerals - they always get over-lighted and as second challenge - how to show a white crystal on a white matrix? So this piece is so much better in person! The whole tri-dimensional assemble consists of uncountable, snowy white and sparkling tiny crystals - really each of it, all around, in each position is lustrous - looks like millions of snow-flakes or ice crystals. And it is a floater - no marks of extraction! The assemble is arborescent, there are numerous branches, wires, thin elongated, curved aggregates. They grow in all directions and each angle reveal new and other details. You can show upside down, rotate it 360° and you will not find a less spectacular view. And although there are uncountable crystals and so many fragile details - nothing is broken; it is perfect condition and represents the very best quality you can imagine for the mineral and the locality.