Rocks, Minerals, Gems & Geology

486 topics in this forum

1. World's Largest Blue Star Sapphire Found

   By Steve Herschbach, January 5, 2016   

   • amazing finds
   • 7 replies
   • 3.3k views
   • 
   • Lanny
   • January 20, 2016

2. Introduction To Physical Geology

   By Steve Herschbach, May 1, 2016   

   • geology
   • 7 replies
   • 3.1k views
   • 
   • Steve Herschbach
   • May 24, 2016

3. Interesting Specimen Gold

   By IDdesertman, November 30, 2016   

   • minerals rocks gems
   • 7 replies
   • 2.9k views
   • 
   • geof_junk
   • December 1, 2016

4. Strange Rock

   By msmotorman, October 20, 2016   

   • minerals rocks gems
   • 7 replies
   • 3.3k views
   • 
   • EastTexasChris
   • October 22, 2016

5. Sure Its Quartz But With A Twist

   By DDancer, January 4, 2017
   • 7 replies
   • 2.7k views
   • 
   • Roughwater
   • January 26, 2017

6. Gold Map Location In North And East Sudan

   By lutfi, April 5, 2017   

   • gps and mapping
   • 7 replies
   • 13.1k views
   • 
   • lutfi
   • April 18, 2017

7. History Of Placer Mining In Nevada

   By Steve Herschbach, April 19, 2017   

   • nevada
   • history
   • 7 replies
   • 7k views
   • 
   • look4au79
   • September 22, 2020

8. Miner Finds Diamond While Looking For Gold Near Foresthill, California

   By Steve Herschbach, August 19, 2017   

   • minerals rocks gems
   • 7 replies
   • 3.6k views
   • 
   • Reno Chris
   • August 26, 2017

9. Nevada Gemstones

   By tboykin, September 11, 2020   

   • nevada
   • 7 replies
   • 1.9k views
   • 
   • Jim in Idaho
   • September 12, 2020

10. Gold Arrowheads???

    By Steve H, June 20, 2019   

    • id help
    • 7 replies
    • 4.7k views
    • 
    • Jim Hemmingway
    • July 18, 2019

11. A Stone With Gold Inside

    By Bader saad, January 8, 2021   

    • id help
    • 7 replies
    • 5.3k views
    • 
    • GotAU?
    • January 20, 2021

12. Mystery Metal Found While Detecting With Equinox 800

    By Allen M, May 6, 2021   

    • id help
    • 7 replies
    • 1.5k views
    • 
    • kac
    • May 7, 2021

13. Help Identify This Rock

    By Allen M, August 16, 2021   

    • id help
    • 7 replies
    • 1.3k views
    • 
    • Rick N. MI
    • August 18, 2021

14. Mysterious Rock

    By JDM, October 1, 2021   

    • id help
    • 7 replies
    • 2.7k views
    • 
    • opalboy
    • January 29, 2022

15. Anyone Have A Clue As To What This Might Be?

    By Diggin' It, February 20, 2022   

    • id help
    • 7 replies
    • 2.4k views
    • 
    • greenhornet_au
    • February 28, 2022

16. Pls Help Identify These! Im Stumped!

    By Charlie huggins, March 6, 2022   

    • id help
    • 7 replies
    • 2.1k views
    • 
    • Steve Herschbach
    • March 9, 2022

17. Does This Ore Have Some Gold?

    By Marc, April 13, 2023
    • 7 replies
    • 945 views
    • 
    • Marc
    • April 14, 2023

18. A Few Examples Of Steatite (soapstone) A Couple Of Points And An Abalone Pendant That I Found This Past Summer. (updated)

    By Doc Bach, February 20, 2023   

    • minerals rocks gems
    • 7 replies
    • 1.6k views
    • 
    • JCR
    • February 24, 2023

19. Uv Light Reveals A Surprise Ruby

    By jasong, May 12, 2023
    • 7 replies
    • 1.6k views
    • 
    • Jim in Idaho
    • May 13, 2023

20. Identifying This Yellow Stone

    By alliv32, June 26, 2023
    • 7 replies
    • 853 views
    • 
    • CoinShooter
    • June 27, 2023

21. I.d Please

    By Bradley, September 2, 2023
    • 7 replies
    • 940 views
    • 
    • Geologyhound
    • September 7, 2023

22. Free Book - The Tertiary Gravels Of The Sierra Nevada Of California

    By Steve Herschbach, December 24, 2013   

    • california
    • research
    • 6 replies
    • 6k views
    • 
    • Steve Herschbach
    • December 27, 2013

23. Detecting Silver in Ontario With Notes On The White's TDI And Garrett Infinium

    By Steve Herschbach, May 14, 2015   

    • whites tdi
    • 6 replies
    • 3.1k views
    • 
    • Jim Hemmingway
    • May 17, 2015

24. The Largest Gem Quality Diamond Discovered In More Than 100 Years

    By Steve Herschbach, May 5, 2016   

    • minerals rocks gems
    • 6 replies
    • 2.7k views
    • 
    • Roughwater
    • May 7, 2016

25. Serpentine Contact Zone Field Hunting Video

    By tvanwho, June 30, 2016   

    • videos
    • geology
    • 6 replies
    • 4.9k views
    • 
    • tvanwho
    • July 14, 2016

26. Hard Rock Mining Questions - Non Gold Related

    By jasong, August 6, 2016   

    • minerals rocks gems
    • geology
    • 6 replies
    • 4.2k views
    • 
    • jasong
    • August 9, 2016

27. Value Of These Gold Nuggets ? 20karat And Silver On The Xray

    By Idaho Pawn and Gold, November 4, 2021   

    • advice and tips
    • 6 replies
    • 1.4k views
    • 
    • Carter
    • December 30, 2021

28. No Gem And Mineral Show Near Me So I Need Help

    By cyberdan, February 4, 2018   

    • advice and tips
    • 6 replies
    • 2.5k views
    • 
    • Bob(AK)
    • February 10, 2018