Welcome to the Gem State!

We are the costume enthusiasts for the state of Idaho and more specifically, the Treasure Valley area.

We are pleased to announce that our membership registration is available on our site! Register and pay dues from the comfort of your own home without having to track down an officer. Membership is $10 per year, so what are you waiting for? Join us!
Register with the GSC

Pattern Class by the Gem State Costumers

On May 6th, from 12pm to 3pm, the Gem State Costumers are conducting an Patterns Class at JoAnn Fabrics on Milwaukee. This will be a class on reading patterns and […]

Intro to Sewing Class

On April 25th, from 12pm to 3pm, the Gem State Costumers are conducting an Introduction to Sewing Class at JoAnn Fabrics on Milwaukee. In this class, we will introduce the […]

Gemstone Ball – Aftermath

The first annual Gemstone Ball was a smashing success! Thank you to everyone who made it! It was a lovely time and we hope to see everyone again soon!