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Review Highlights
Fun but hard work

We chose Ace over the other Herkimer location because this looked more authentic. We rented a... read more

Reviewed 8 September 2018
Long Island
Unique and Fun Camping Experience

Wanted to take my grandkids for Herkimer Diamond but wasn’t sure where to go. After reading reviews... read more

Reviewed 6 September 2018
via mobile
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  • Excellent52%
  • Very good34%
  • Average8%
  • Poor1%
  • Terrible5%
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“sledge hammer”(14 reviews)
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84 Herkimer St, Herkimer, NY 13406-2713
+1 315-891-3855
Reviews (135)
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All reviews sledge hammer safety glasses quartz crystals rock piles bring lots of water hard labor bring gloves long sleeves big ones gift shop change of clothes for sale whole process herkimer diamond mine nice crystals camping experience different areas
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1 - 10 of 135 reviews
Reviewed 1 week ago

What a fun place to visit. It is rustic and not fancy, but I found some Herkimer Diamond and had a really great time. I rented equipment in the store and it wasn't too expensive and I tried my hand a panning and smashing rocks....More

Thank OnwardAdventure
Reviewed 11 October 2018

On this year's trip to Old Forge we decided to try some diamond mining in Herkimer. We went to the Ace of Diamond mines. This was a good place for my 2 year old grandson to just sit and bang on some rocks for awhile....More

Thank Marc G
Reviewed 21 September 2018 via mobile

Better to mine in late morning onwards since it is easy to spot the grittering minerals! Good experience for first timers

Thank FreyaBear
Reviewed 16 September 2018 via mobile

Thank god for places like this. For $10 you can spend the whole day here hunting for crystals. It can be hard work but I found literally hundreds over the course of three days. Most were small (dime sized) but I found several golf ball...More

1  Thank BobAdams111
Reviewed 11 September 2018

This is the only place I have mined for Herkimers and it definitely is NOT a tourist trap. The folks who run the mining operation/store can be a little gruff which may put some off who are looking for a friendly atmosphere. But, they are...More

Thank Eric M
Reviewed 8 September 2018

We chose Ace over the other Herkimer location because this looked more authentic. We rented a 3-pound hammer, a chisel and were told what rocks to look for and off we went. We had the best luck on the top of the hill after watching...More

1  Thank tabhauser
Reviewed 6 September 2018 via mobile

Wanted to take my grandkids for Herkimer Diamond but wasn’t sure where to go. After reading reviews decided on Ace of Diamonds Mine and Campground. Glad we did. Using a backhoe they add “new” rocks every morning, giving you high chance of finding beautiful quartz....More

Thank maryhH5588KK
Reviewed 5 September 2018

The Aces of Diamonds Mine was an experience like none before. My husband has wanted to do this for quite awhile, so I said "why not"... lol.. Well lets just say for those who are thinking about it, it is a unique experience... but whether...More

Thank WheelerFamily805
Reviewed 30 August 2018 via mobile

Great place to mine. Hours 9 to 5 pm. Affordable...13$? Per day. Tool rental 1$ per tool. Several different areas to mine...recently excavations piled up daily....lower level and up higher levels, pile of gravel you sift through ( very productive in terms of diamond finds)...More

Thank maria h
Reviewed 28 August 2018

We Tried both Ace of Diamonds and the KOA Herkimer Diamond Mines up the street. The KOA mine was definitely cleaner and more friendly but the prices were higher. The kids loved the sluice but it was $12 a bag that took 5 minutes at...More

Thank fhillestad
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Questions & Answers
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20 November 2018|
AnswerShow all 5 answers
Response from Marc G | Reviewed this property |
There really aren't any tips you just really have to have a lot of time to look over everything. We had 2 small children with us so we didn't spend as much time there as we could have but we did find a few small " diamonds "
Joe C
16 November 2016|
Response from Lou Ann N | Reviewed this property |
They are closed for this season but open April 1,2017 and hours are 9-5 according to their website. They operate April 1 to October 31. Google it for more information.
21 June 2015|
Response from Elisha-John H |