Largest diamond shaped building that exhibits and trades gems

Doji Tower of Hanoi, Vietnam set a record for being the largest diamond -shaped building that exhibits and trades gems covered with marble and tempered glass by light-changing technology (Blue Sky). It is a 16-storey building with a total area of 19,000 square metres. The base of the building is completely designed as a gem pedestal; and the upper part is covered with 1,433 glass panels to create a giant diamond block with a unique light-changing effect, as confirmed on October 6, 2022.