Elizabeth Taylor, another of history's most famous fashion icons, was known for her love of extravagant jewelry.
Indeed, her most famous piece was arguably a Bulgari necklace that Richard Burton gave her for their 1964 wedding, with 16 octagonal emeralds and a 23-carat emerald pendant in the center.
Grande's necklace could also have a more symbolic resonance.
As Refinery29 noted in 2018 — when several actors wore green gemstones to the Golden Globes, in the thick of the #MeToo movement — emeralds have long symbolized "mercy, compassion, and universal love."
"Aristotle, for example, thought the gemstone would help find success during litigations, or find support for a new venture," Refinery29's Laia Garcia wrote. "The ancient Egyptians believed that emeralds stood for fertility and rebirth. It is also thought to encourage growth, reflection, peace, and balance."