The glories of its atelier are showcased in “Corbella Milano,” a book edited by Ms. Corbella and Bianca Cappello released this April in the United States by the Milan-based publisher Silvana Editoriale. It includes photographs of some of the stage jewels and armaments that have survived, images of opera stars in costume, design sketches and other archival references. It’s a tribute, Ms. Corbella said, to her father, who died before the final version of the book was completed, and to the legacy of previous generations.

The family had a long connection to Italy’s most celebrated opera house, beginning with Ms. Corbella’s great-great-great-grandfather, who she said lived in the building as the caretaker in the mid-1800s.

His two sons, Napoleone and Achille, established the Corbella atelier and began creating costume jewels and arms for La Scala. The business was listed as the official opera house jeweler on its playbills from 1873 to 1951, excluding, for a reason no one now knows, the four years from 1888 to 1892. The relationship ended when Ms. Corbella’s grandfather decided that the opera house was habitually too late with payments and, after dispatching a final order of 200 custom-made swords, he switched to wholesaling his own line of bijoux jewelry and making custom pieces for opera singers. His son, Angelo, Ms. Corbella’s father, transformed the business again, importing jewelry from China until his retirement in 2013. The business is not active today.

The book is based on the family archives, stored in an apartment in the city.

They were transported there around 1990, Ms. Corbella said, but one of the two moving trucks just disappeared with its cargo and never was found. Still, in addition to the books, historic documents and photographs of antique pieces, there are several cupboards filled with armaments and jewelry, and utility boxes stuffed with metal parts, stamps and imitation gems.