it takes work to find the glimmering large Herks. Work, heavy equipment, muscles and luck. But if you set your expectations realistically, and go for the glimmer, you will find herks. Running around smashing things with a hammer doesn't always do it. After a rain storm, carefully walking and looking will turn up some incredible specimens. Small yes but some... More

This KOA Campground is very nice, but the Herkimer "diamond mine" associated with it has very slim pickings compared to a few years ago. Still fun for families to hunt for the naturally faceted clear quartz crystals.

The place is GREAT for kids or that romantic stop to prospect for your "diamond". I'm really not sure what your odds are for finding a stone like the one set shortly after the mine first opened. I was told by the antique dealer who sold it to me that it had the provenance to establish the veracity of the... More

Great fun activity. Found some Herkimer Diamonds, learned a great deal from the very helpful and friendly staff. Mineral Shop is great place to learn and buy things.

my boyfriend and I are always looking for fun and interactive things to do and we definitely found it with this place. I will definitely go back this summer!!

went with 5 boys- age range 4-12. Who would have thought that smashing rocks would provide hours of fun? They want to go back.

We were all able to find lots of "diamonds" without having to try too hard! Reasonable prices for mining!

This facility includes a museum, a store where both rough and finished stones can be purchased, and the actual mine where you can search for the crystals that are the Herkimer diamonds. this would be a fun thing for kids, and adults can also enjoy a visit here. There is also a KOA Campground across the 2 lane road, with... More

The kids had a blast (ages 7-9). However, finding diamonds is hard work! For the price for 4 kids and 2 adults, you get way more value than you would get going to a movie. Highly recommend for family entertainment.