Trapiche structure refers to a special structure comprising arms, core, and main body. In this study, the spectroscopic characteristics and element, structure are investigated using various modern testing methods. The results showed that the infrared spectrum of beryl agrees with the characteristics of water-type beryl of alkali-deficient structure. The Raman spectra show that the components of the core and arms are consistent with that of the main body, which belongs to beryl. The UV-Vis absorption spectra showed that Fe²⁺ exists in octahedron and tunnel, confirming the reason for the blue color of the sample. The composition analysis shows that high content of Fe²⁺ exists in the periphery and arms of hexagonal, with deeper blue color. The Trapiche arms' position of the aquamarine agrees with the hexagonal columnar plane, which belongs to the Trapiche-like gem. The microscopic characteristics show that the "arm" comprises a large number of directionally arranged flocculent inclusions, which are jointly caused by defects formed in the process of crystal-layered outward growth and parallel concatenation according to the theory of crystal-layered growth.