Herkimer Diamond Mineral Specimens

Herkimer diamond mineral specimens come in all shapes and sizes. This one is from Fonda, New York.   An impressive cluster of Herkimer diamond crystals from Fonda, New York.   This cluster of Herkimer Diamonds was unexpected. We did not count on finding pockets until we were about 10 feet down.   

The majority of these specimens are from Treasure Mountain in Little Falls, NY.  Top quality pieces mostly recovered over the past decade by myself. There is a lot of variety in the specimens from these locations: combination pieces with calcite, parallel growth clusters, intergrown groups, inclusions of anthraxolite, fine skeletal growth crystals, Herkimer diamonds on dolomite crystal matrix, internal shaft scepters and of course those beautiful and very rare fully formed scepters. I wonąt describe the dozens that are white, have some damage, major blowouts discolorations or other problems. No junk here. 

These are nice specimens for the price. Of the hundreds (perhaps thousands) of Herkimer diamonds I have sold over the years, not a one has ever been returned or mention to me in any negative way by a customer. I attempt to keep the price at what would be considered by most a wholesale level.  Sorry about the less than perfect photos.  Of all the minerals we work with these are probably the toughest to get good photos of. 

Don't forget to read our articles on Diamond Acres and  Treasure Mountain.

Jewelry Grade Herks sold in lots and can be reached through this link...JEWELRY GRADE HERKS

Enhydro Herks are sold as individual specimens at this link...ENHYDRO and NEGATIVE CRYSTAL HERKS

We have specimens selected as holding high potential for...WIRE WRAPPING

Unique Herkimer diamonds crystals described as...SKELETAL

Multiple diamonds often form attached groups called...CLUSTERS

NEW  St. Johnsville Quarry Herks

 

 

 

OKH-739

OKH-739    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A nice display piece measuring 6.5 x 5.5 x 2.6 cm overall.  The largest Herk is 2.5 x 2.5 x2.5 cm.  Small repair to a chip on the backside of one crystal otherwise in perfect condition.  Very nice for the price of $140

 

 

 

 

OKH-740

OKH-740    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A partial vug with several nice Herks high in it.  The specimen measures 6/9 x 6.2 x 4.2 cm with Herks to 1.7 cm.  One tiny Herk is broken, no damage to anything else.  It stands firmly on its side displaying very nicely.  $95

 

 

 

 

OKH-741

OKH-741    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A nice specimen that stands on edge showing off a single large 2.1 x 2 x 1.4 cm diamond.  It has a small inclusion of anthraxolite and a spot on its reverse side where it was in contact with matrix.  An aesthetic piece that displays smartly.   $85

 

 

 

 

OKH-742

OKH-742    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A small matrix specimen measuring 3.8 x 3.5 x 2.1 cm with two large, and other, Herks to 2.6 cm each.  Beautiful display, back shows two of the diamonds had matrix attachments.  $90

 

 

 

 

OKH-743

OKH-743    Herkimer Diamond     RESERVED    Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A fine damage free plate of crystals with a slightly domical shape.  5 x 4.7 x 2 cm.  Individual crystals to 1.6 cm that are exceptionally clear.  Great piece!  $80

 

 

 

 

OKH-744

OKH-744    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  Nice damage free Herks stand up off this matrix specimen.  They are up to 1.5 cm each and 5 x 4.5 x 4 cm are the specimen’s overall dimensions.   $145

 

 

 

 

OKH-745

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OKH-745    Herkimer Diamond     RESERVED    Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  This specimen is the finest of the offerings that we have.  It measures 8 x 5 x 4.2 cm overall with crystals to 3.6 cm.  On crystal has been reattached with all the rest being damage free naturals.  The matrix is a dome shaped druze covered section of dolostone.  Good views all around. Contact on edge of one large diamond.  Displays great vertically or on edge.  An uncommon find.  Especially fine for Crystal Grove.  $295

 

 

 

 

OKH-746

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OKH-746    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  Another large crystal specimen measuring 6.5 x 4.5 x 3 cm with Herks to 3.7 cm. Two big crystals are complete and damage free but had to be reattached.  Chip on one of the tiny diamonds but it is barely noticeable.  Excellent quality.  $170

 

 

 

 

OKH-747

OKH-747    Herkimer Diamond     RESERVED     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  An attractive 5.5 x 5 x 4.3 cm grouping of clear crystals to 1.4 cm each.  The crystals sit up high and display nicely with only one small one having damage.  Clusters this nice are certainly not commonplace from this mine.  $125

 

 

 

 

OKH-748

OKH-748    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A small specimen measuring 3.5 x 3 x 2.4 cm with crystals to 1.7 cm.  Very clear crystals, one tiny one is damaged.  Displays well.  $80

 

 

 

 

OKH-749

OKH-749    Herkimer Diamond     RESERVED    Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A damage free dome with two very clear crystals sitting up high on it.  3.9 x 3 x 2.9 cm.  Crystals to 1.2 cm.  Very attractive  $30

 

 

 

 

OKH-750

OKH-750    Herkimer Diamond     Crystal Grove Mine, Lassellsville (Oppenheim), Fulton County, New York.  Collected by Michael Walter.  A nice example with a largish diamond, 1.7 cm, and other compose this 3.8 x 3.3 x 2.7 cm specimen.  One small chip on edge of large diamond.  $30

 

 

 

 

 

OKD-630

OKD-630   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.5 cm and 6.1 grams.  One minor contact and moderate anthraxolite inclusions.  25$

 

 

 

 

 

OKD-631

OKD-631   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  1.5 cm and 1.3 grams.  Clear.  Shallow .5 cm chip.  15$

 

 

 

 

 

OKD-632

OKD-632   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  1.4 cm and 1.2 grams.  Shallow contact, clear except for enhydro with bubble (non moving) and minor anthraxolite.  15$

 

 

 

 

 

OKD-633

OKD-633   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  1.7 cm and 2.0 grams.  Very clear with big enhydros (liquid, solid and gas together).  25$

 

 

 

 

 

OKD-634

OKD-634   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.5 cm and 5.8 grams.  Minor enhydros and some internal fracturing.  20$

 

 

 

 

 

OKD-635

OKD-635   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.2 cm and 4.9 grams.  Minor internal fracturing and moderate anthraxolite.  15$

 

 

 

 

 

 

OKD-636

OKD-636   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  3.0 cm and 9.6 grams.  Mild contacts, moderate internal fracturing and large internal anthraxolite chunks.  30$

 

 

 

 

 

 

OKD-637

OKD-637   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.7 cm and 6.5 grams.  Tiny tip ding and moderate anthraxolite inclusions.  20$

 

 

 

 

 

 

OKD-638

OKD-638   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.1 cm and 3.5 grams.  Tiny contact, wonderful pepper anthraxolite inclusions.  35$

 

 

 

 

 

 

OKD-639

OKD-639   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  3.4 cm and 15.0 grams.  Penetrating crystal which looks like fracturing, minor anthraxolite and tiny internal fractures.  45$

 

 

 

 

 

 

OKD-640

OKD-640   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.3 cm and 5.1 grams.  Moderate internal fractuing and anthraxolite.  20$

 

 

 

 

 

 

OKD-641

OKD-641   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.4 cm and 3.8 grams.  Moderate internal fractuing and anthraxolite.  20$

 

 

 

 

 

OKD-642

OKD-642   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.9 cm and 9.1 grams.  Pepper like selective facial inclusions of anthraxolite and very minor internal fracturing.  45$

 

 

 

 

 

OKD-643

OKD-643   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  3.0 cm and 8.5 grams.  Minor internal fracturing, contact and anthraxolite.  35$

 

 

 

 

 

OKD-644

OKD-644   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.6 cm and 7.7 grams.  Very minor tip contact, smoky phantom and moderate anthraxolite.  30$

 

 

 

 

 

 

OKD-645

OKD-645   Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.  2.1 cm and 2.5 grams.  Nice sloid, liquid and gas inclusions (all non-moving).  Very clear.  30$

 

 

 

 

 

OKD-549

OKD-549     Herkimer Diamond    Treasure Mountain Mine, Little Falls, New York.   Ex. Michael Walter Collection, Collected by Michael Walter.   6.5 cm floater Herk with lots of pepper like anthraxolite inclusions.  An enhydro blowout on the face that is down when displayed.  Very minor chatter marks on termination.  This piece is a fine example from the now closed Treasure Mountain Mine which displays wonderfully.  A price that can’t be beat… 50$

 

 

 

 

 

 

EA-130

EA-130 Herkimer Diamond Treasure Mountain, Little Falls, NY. This may be the best cluster I have seen from Treasure Mt. to date. It is composed of two larger crystals (approx 5.5 cm each) and 5 additional rider, or sister, crystals lightly attached to their sides. It is a reassembled, self collected group that would be described as floaters. Only attachment is a couple dolomite crystals on the bottom side which are only a few millimeters in size. Typical inclusions and top shelf aesthetics. 500$

 

 



OKA-782E Intergrown pair of crystals with moderate anthraxolite inclusions. Crystals are 4 and 4.9 cm each. Very nice. 70$



OKA-784 Skeletal Herkimer Diamonds. Treasure Mt. is quickly becoming famous for its small, beautifully formed skeletal crystals. These are, in my opinion, better than the skeletal Herk crystals from any other location. Similar to the ones in Rocks and Minerals Magazine...these are similar to the one in the American Museum of Natural History....at a fraction of the cost.

OKA-784B Pair of crystals...5.5 x 5 cm overall. Slightly smoky. 65$

 

 

OKA-869 Herkimer Diamond Ace of Diamonds, Middleville, NY. 6.8 cm crystal with a 3 cm rider crystal. Both have some internal fracturing but less than normal. Rider is partially skeletal and both of these double terminated crystals are completely damage free. The big crystal has a very light smoky phantom. Very nice example at a wholesale price.  85$


 

 


OKA-870 Herkimer Diamond Fonda, NY. This is a 10 x 8 cm cluster composed of 4 large Herks up to 7.5 cm each. The cluster is reassembled and has some damage. The largest crystal is repaired and missing a piece. Sounds unattractive but the piece is still quite handsome. This piece should be displayed on edge with damaged crystal down to look its best. 100$

 

 

 

OKA-885

OKA-885 Herkimer Diamond Treasure Mountain, Little Falls, NY. Cluster of three diamonds up to 4.2 cm in size. Entire piece measures 5.4 x 4.2 cm. Chips on base of piece are hidden from view from any angle. Minor anthraxolite and typical fracture inclusions. Excellent display specimen. Reassembled. Nice price.... 40$


 

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