This item is sold out at the moment.

82.5 Carat Herkimer Diamond NY Quartz Crystal Jewelry Grade! Rainbow and Key Marks!

Get Shipping Estimate

Made in Arkport, New York

Item details

This water-clear Herkimer Diamond Quartz Crystal was mined by myself at the Ace of Diamonds Mine in Middleville, NY. On all but about two total faces, this crystal has very little surface damage. There are a few small attachment marks where the crystal met its host stone. One face has a chip that is relatively flat and does not take much away from the natural shape of this crystal. This chip only slightly continues onto a few other faces. I have tried to capture this in the last photograph. In the end, this chip and some slight internal fracturing has given this crystal its rainbow-ee look! On the outside there are no traces of carbon or matrix. On the inside, I count approximately 12 tiny carbon inclusions. There are two small key marks on their own respective face. This crystal weighs 82.5 carats/16.5 grams. I am personally amazed at the lack of damage for a Herkimer of this size!



I just got into finding these gorgeous crystals in the summer of 2017 and have become absolutely obsessed by their majestic-ness! I even found myself renting an AirBnB for three weeks outside of Herkimer, NY in October 2017 so I could go and smash rocks and dig through the dirt every day to deal with my new obsession. I have been giving them out to friends and family left and right and everybody (even those with no prior connection to gem collecting) seems to be completely enamored with their gifts. My sister convinced me that I should try to share some of my collection with the world by selling them online. She insisted that if I could sell enough, I would have a way to fund my new favorite hobby once the mining season opens back up. Maybe someday it could become more than a hobby! We will have to see.

I have hunted the internet and even some gem shows to find the average prices so that I could try to beat them and offer super reasonable deals for real NY Herkimers. On Etsy, it appears that a solid majority of the listings contain Herkimers from China and Pakistan or the source of the crystals is evaded in the listing (meaning they likely are not from NY). Although the crystals not found in NY are amazing too, many folks (and Wikipedia) believe that the real deal crystals come from the Herkimer area. It might be my new found pride, but I find myself in agreement with these originalists.

To save you from having to read too much more, feel free to message me if you would like any additional information. There is plenty of information available on the internet (such as these crystals were formed approximately 400 million years ago!). I am selling these to the buyer who would like to use these stones for making jewelry, to use in metaphysical or healing ceremonies, or whatever else these crystals can do to improve your well-being. Since I am new to this, I would like to offer you some other Herkimers as a gift for being my first customers. It may not be a lot, but it may be a few half or quarter crystal pieces that I would not be able to sell individually or maybe a few small C grade crystals or something of the sort. When it comes to grading these crystals, it a very subjective process so I will most likely call them jewelry grade (if they are of course) and try my best to give accurate and detailed descriptions and photographs. I will accept refunds if the item is damaged en route, although I am not certain how that process will work yet (I'm new!). I would assume that in order for me not to lose money, that the buyer would pay for return shipping (USPS First Class Package 1-3 days is $3.00 and fine with me). Thank you for being you and all that jazz!


Average review
Such a lovely stone! Just as described. Thank you so much for the extras as well. I will return for more.
Feb 24, 2018 by joverl

Shipping & policies
Ships next business day
Arrives from the United States
Estimated Shipping
Shipping to
Zip or postal code

Secure options
Etsy Studio keeps your payment information secure. Etsy Studio shops never receive your credit card information.

Returns & exchanges
I gladly accept returns
Contact me within: 3 days of delivery
Ship items back within: 7 days of delivery
I don't accept exchanges or cancellations
But please contact me if you have any problems with your order.
The following items can't be returned or exchanged
Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:
  • Custom or personalized orders
  • Perishable products (like food or flowers)
  • Digital downloads
  • Intimate items (for health/hygiene reasons)
Conditions of return
Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.