Rocks, Fossils, and Minerals for Sale
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Herkimer Diamond for SaleHerkimer Diamonds

 
Rocks, Minerals, and FossilsHerkimer Diamonds aren't actual diamonds, but they're still highly valued by collectors!  Named after Herkimer County, New York, where they were first discovered in the 1700s, Herkimer Diamonds are natural double-terminated crystals of Quartz (SiO2).

Herkimer Diamonds formed inside Cambrian dolomite host rock, which you can see pictured at the bottom of this page.  The rare double-terminated crystals are the result of growing inside cavities with little or no contact with the host rock, Little Falls Dolostone, which was deposited about 500 million years ago. Dolomite rock or dolostone is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite (CaMg(CO3)2).

Herkimer Diamonds can be clear, cloudy, or smoky, and often have black organic intrusions that provide scientific samples of fluid that circulated in the host rock at the time of formation.  Although similar double-terminated Quartz crystals are found in other localities around the world, the name Herkimer Diamond correctly applies only to specimens from Herkimer County, New York.  All of the specimens shown on this page are genuine Herkimer Diamonds.



Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond (A)
Weight = 11 grams
30mm x 18mm x 17mm
$20.00
Add to Cart
Herkimer Diamond (B)
Weight = 9.8 grams
30mm x 20mm x 12mm
$20.00
Add to Cart
Herkimer Diamond (C)
Weight = 19 grams
32mm x 25mm x 17mm
$20.00
Add to Cart
 
 
(On this page, you'll receive the exact Herkimer Diamond shown in each photo.)


Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond (D)
Weight = 10 grams
25mm x 25mm x 17mm
$20.00
Add to Cart
Herkimer Diamond (E)
Weight = 4 grams
20mm x 10mm x 10mm
$20.00
~ SOLD ~
Herkimer Diamond (F)
Weight = 0.4 grams
10mm x 5mm x 6mm
$10.00
Add to Cart

 
 

Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond (G)
Weight = 0.3 grams
10mm x 6mm x 5mm
$10.00
Add to Cart
Herkimer Diamond (H)
Weight = 0.2 grams
7mm x 5mm x 4mm
$10.00
Add to Cart
Herkimer Diamond (I)
Weight = 0.6 grams
12mm x 8mm x 7mm
$10.00
Add to Cart



(On this page, you'll receive the exact Herkimer Diamond shown in each photo.)

 
Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond for Sale
Herkimer Diamond (J)
Weight = 0.3 grams
8mm x 6mm x 4mm
$10.00
Add to Cart
Herkimer Diamond (K)
Weight = 0.3 grams
9mm x 7mm x 6mm
$10.00
Add to Cart
Herkimer Diamond (L)
Weight = 0.3 grams
8mm x 6mm x 4mm
$10.00
Add to Cart

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Herkimer Diamonds in Dolomite Host Rock
Herkimer Diamonds in Dolomite Host Rock

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Mother Lode Rock Shop
PO Box 1812
Nevada City, CA 95959
info@rocksmineralsfossils.com