It is a glass mask-type pendant that has been reproduced as a motif of the mask used in the "masquerade ball" of the Majapahit Kingdom, a Hindu kingdom that flourished on the island of Java from the end of the 13th century to the 15th century.

Since it is made of glass and has an extremely complex structure, it can be damaged relatively easily by impact, but if it is handled carefully as an ornament or figurine, it can be fully enjoyed.