There are over 774 gems and mineral localities in Colorado.  Here’s a list of key locations and the material that can be found (Source: Rocks and Minerals, July 2002) .

1. Stoneham – Barite
2. State Line Diamond District
3. Red Feather Lakes – Amethyst
4. Devils Head – Smoky Quartz, Clear White Quartz, Citrine and Topaz
5. Wigham Creek – Topaz, Smoky Quartz, and Amazonite
6. Crystal Park – Topaz, Smoky Quartz, and Amazonite
7. Glen Cove – Topaz
8. Crystal Peak – Amazonite, Topaz, Smoky Quartz and Clear White Quartz
9. Tarryall Mountains – Topaz, Smoky Quartz and Clear White Quartz
10. Cripple Creek – Turquoise
11. Alma – Rhodochrosite (Colorado State Gem)
12. Leadville – Turquoise
13. Italian Mountain – Lapis Lazuli
14. Buena Vista – Aquamarine, Phenakite, Rose Quartz
15. Ruby Mountain – Garnet, Obsidian and Topaz
16. Badger Creek – Peridot
17. Villa Grove – Turquoise
18. La Garita Crystal Hill Mine – Amethyst
19. Del Norte – Plume Agate
20. Manassa – Turquoise
21. Creede – Amethyst, Sow Belly Agate, Silver
22. Silverton Sunnyside Mine – Rhodonite (Pyromangite)
23. Silverton Camp Bird Mine – Gold in Milky Quartz
24. Whitewater – Amethyst
25. Book Cliffs – Barite

 

Click here for a listing of known Colorado gem & mineral locations:  http://www.peaktopeak.com/colorado/index.php3