Alice was given some spectacular jewels upon her marriage to Henry. In addition to the items given by her family, Alice received a beautiful parure assembled by Queen Mary from the Queen's personal collection. Alice got more jewelry when Queen Mary died.Mary seems to have designated diamonds for QEQM, sapphires for Marina, and emeralds for Alice. Alice gave her daughter-in-law full access to most of her jewels when Birgitte became the Duchess of Gloucester. I include here an article and videos of Alice in action, accompanies by her emeralds.

https://royalwatcherblog.com/2022/06/20/duchess-of-gloucesters-emerald-necklace/