Yup, it's a very vintage heel from a “woman's” shoe. Looks like it

1940s Shoes Styles for Women History

1950s Shoe Styles- History and Shopping Guide

Ultimate Guide to Women's High Heels: Everything You Need to Know

The History of the Woman's Pump Shoe - Bellatory

720+ Removing Heels Stock Videos and Royalty-Free Footage - iStock

1920s shoes for women: Stylish footwear from a century ago - Click

The History of High Heels - The Modern Directory

Aquazzura's Edgardo Osorio is crystal obsessed, now he's teamed up

Can men wear women's shoes? - Quora

Anatomy of a High Heel & Parts You Need to Know

The shoe of the season is a mesh flat