Herkimer Diamond Quartz Crystals

This collection is 50% OFF for our annual Last Qtr / End of Year Sale. Since 2006 we have been bringing you one of the premier online sources for Crystals & Jewelry. Come explore with us.

Updated Sept 30, 2019 : New Herkimer Diamonds from the 2019 Mining season are available now.

Herkimer Diamond Quartz Crystals | Buy Direct from the source right here in central NY, USA. Featuring Herkimer Diamonds from Middleville / Herkimer, Little Falls & St. Johnsville areas, at the most competitive prices online. Herks are harder than normal Quartz at 7.5 and are some of the most optical clear Quartz in the world.

Size / Measurement References : 5 carats (cts) = 1 Gram (g)  25.5mm = 1" (inch)

  • IVC Logo 5" Decal Car Sticker | Alchemical Flower of Life ***2019 CLEARANCE***
    Sale
    from $3.00 USD

    IVC Logo 5" Decal Car Sticker | Alchemical Flower of Life ***2019 CLEARANCE***

    In stock and ready to ship! We made a few of these for the team and decided they were so cool we should just print a bunch of them! So, here they a...

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    from $3.00 USD
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  • Herkimer Diamond Quartz Crystal AA GRADE 1 STONE - CHOOSE SIZE
    Sale
    from $6.00 USD

    Herkimer Diamond Quartz Crystal AA GRADE 1 STONE - CHOOSE SIZE

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3%...

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    from $6.00 USD
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  • Herkimer Diamond Quartz Crystal 3 ct 11.54mm A+
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    Original Price $24.00 USD
    Current Price $12.00 USD

    Herkimer Diamond Quartz Crystal 3 ct 11.54mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $24.00 USD
    Current Price $12.00 USD
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  • Herkimer Diamond Quartz Crystal 3.10 ct 11.03mm A+
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    Original Price $25.00 USD
    Current Price $12.50 USD

    Herkimer Diamond Quartz Crystal 3.10 ct 11.03mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $25.00 USD
    Current Price $12.50 USD
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  • Herkimer Diamond Quartz Crystal 3.25 ct 11.97mm A+
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    Original Price $26.00 USD
    Current Price $13.00 USD

    Herkimer Diamond Quartz Crystal 3.25 ct 11.97mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $26.00 USD
    Current Price $13.00 USD
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  • Herkimer Diamond Quartz Crystal 3.25 ct 12.16mm A+
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    Original Price $26.00 USD
    Current Price $13.00 USD

    Herkimer Diamond Quartz Crystal 3.25 ct 12.16mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $26.00 USD
    Current Price $13.00 USD
    Sold out
  • Herkimer Diamond Quartz Crystal 3.20 ct 11.47mm A+
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    Original Price $26.00 USD
    Current Price $13.00 USD

    Herkimer Diamond Quartz Crystal 3.20 ct 11.47mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $26.00 USD
    Current Price $13.00 USD
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  • Herkimer Diamond Quartz Crystal 3.40 ct 11.03mm A+
    Save 50%
    Original Price $27.00 USD
    Current Price $13.50 USD

    Herkimer Diamond Quartz Crystal 3.40 ct 11.03mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $27.00 USD
    Current Price $13.50 USD
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  • Herkimer Diamond Quartz Crystal 3.35 ct 11.05mm A+
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    Original Price $27.00 USD
    Current Price $13.50 USD

    Herkimer Diamond Quartz Crystal 3.35 ct 11.05mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $27.00 USD
    Current Price $13.50 USD
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  • Herkimer Diamond Quartz Crystal 3.40 ct 11.34mm A+
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    Original Price $27.00 USD
    Current Price $13.50 USD

    Herkimer Diamond Quartz Crystal 3.40 ct 11.34mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $27.00 USD
    Current Price $13.50 USD
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  • Herkimer Diamond Quartz Crystal 3.35 ct 12.25mm A+
    Save 50%
    Original Price $27.00 USD
    Current Price $13.50 USD

    Herkimer Diamond Quartz Crystal 3.35 ct 12.25mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $27.00 USD
    Current Price $13.50 USD
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  • Herkimer Diamond Quartz Crystal 3.35 ct 11.56mm A+
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    Original Price $27.00 USD
    Current Price $13.50 USD

    Herkimer Diamond Quartz Crystal 3.35 ct 11.56mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $27.00 USD
    Current Price $13.50 USD
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  • Herkimer Diamond Quartz Crystal 2.75 ct 11.13mm AA
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    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 2.75 ct 11.13mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
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  • Herkimer Diamond Quartz Crystal 3.55 ct 11.66mm A+
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    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 3.55 ct 11.66mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
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  • Herkimer Diamond Quartz Crystal 3.45 ct 10.99mm A+
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    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 3.45 ct 10.99mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.55 ct 11.87mm A+
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    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 3.55 ct 11.87mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.45 ct 11.17mm A+
    Save 50%
    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 3.45 ct 11.17mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.50 ct 11.29mm A+
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    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 3.50 ct 11.29mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
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  • Herkimer Diamond Quartz Crystal 3.45 crt 12.61mm A+
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    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 3.45 crt 12.61mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.45 ct 11.92mm A+
    Save 50%
    Original Price $28.00 USD
    Current Price $14.00 USD

    Herkimer Diamond Quartz Crystal 3.45 ct 11.92mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $28.00 USD
    Current Price $14.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 2.90 ct 11.23mm AA
    Save 50%
    Original Price $29.00 USD
    Current Price $14.50 USD

    Herkimer Diamond Quartz Crystal 2.90 ct 11.23mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $29.00 USD
    Current Price $14.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 2.85 ct 10.98mm AA
    Save 50%
    Original Price $29.00 USD
    Current Price $14.50 USD

    Herkimer Diamond Quartz Crystal 2.85 ct 10.98mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $29.00 USD
    Current Price $14.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.60 ct 12.39mm A+
    Save 50%
    Original Price $29.00 USD
    Current Price $14.50 USD

    Herkimer Diamond Quartz Crystal 3.60 ct 12.39mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $29.00 USD
    Current Price $14.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.60 ct 11.64mm A+
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    Original Price $29.00 USD
    Current Price $14.50 USD

    Herkimer Diamond Quartz Crystal 3.60 ct 11.64mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $29.00 USD
    Current Price $14.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3 ct 11.16mm AA
    Save 50%
    Original Price $30.00 USD
    Current Price $15.00 USD

    Herkimer Diamond Quartz Crystal 3 ct 11.16mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $30.00 USD
    Current Price $15.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.80 ct 13.14mm A+
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    Original Price $30.00 USD
    Current Price $15.00 USD

    Herkimer Diamond Quartz Crystal 3.80 ct 13.14mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $30.00 USD
    Current Price $15.00 USD
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  • Herkimer Diamond Quartz Crystal 3.10 ct 10.60mm AA
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    Original Price $31.00 USD
    Current Price $15.50 USD

    Herkimer Diamond Quartz Crystal 3.10 ct 10.60mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $31.00 USD
    Current Price $15.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.05 ct 10.94mm AA
    Save 50%
    Original Price $31.00 USD
    Current Price $15.50 USD

    Herkimer Diamond Quartz Crystal 3.05 ct 10.94mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $31.00 USD
    Current Price $15.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.85 ct 12.32mm A+
    Sold out
    Original Price $31.00 USD
    Current Price $15.50 USD

    Herkimer Diamond Quartz Crystal 3.85 ct 12.32mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $31.00 USD
    Current Price $15.50 USD
    Sold out
  • Herkimer Diamond Quartz Crystal 3.85 ct 12.59mm A+
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    Original Price $31.00 USD
    Current Price $15.50 USD

    Herkimer Diamond Quartz Crystal 3.85 ct 12.59mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $31.00 USD
    Current Price $15.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.30 ct 11.17mm AA
    Save 50%
    Original Price $33.00 USD
    Current Price $16.50 USD

    Herkimer Diamond Quartz Crystal 3.30 ct 11.17mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $33.00 USD
    Current Price $16.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 4.15 ct 14.07mm A+
    Save 50%
    Original Price $33.00 USD
    Current Price $16.50 USD

    Herkimer Diamond Quartz Crystal 4.15 ct 14.07mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $33.00 USD
    Current Price $16.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 4.15 ct 12.32mm A+
    Save 50%
    Original Price $33.00 USD
    Current Price $16.50 USD

    Herkimer Diamond Quartz Crystal 4.15 ct 12.32mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $33.00 USD
    Current Price $16.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.35 ct 11.15mm AA
    Save 50%
    Original Price $34.00 USD
    Current Price $17.00 USD

    Herkimer Diamond Quartz Crystal 3.35 ct 11.15mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $34.00 USD
    Current Price $17.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.40 ct 11.40mm AA
    Save 50%
    Original Price $34.00 USD
    Current Price $17.00 USD

    Herkimer Diamond Quartz Crystal 3.40 ct 11.40mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $34.00 USD
    Current Price $17.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.35 ct 11.33mm AA
    Save 50%
    Original Price $34.00 USD
    Current Price $17.00 USD

    Herkimer Diamond Quartz Crystal 3.35 ct 11.33mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $34.00 USD
    Current Price $17.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.35 ct 11.85mm AA
    Save 50%
    Original Price $34.00 USD
    Current Price $17.00 USD

    Herkimer Diamond Quartz Crystal 3.35 ct 11.85mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $34.00 USD
    Current Price $17.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.35 ct 11.50mm AA
    Save 50%
    Original Price $34.00 USD
    Current Price $17.00 USD

    Herkimer Diamond Quartz Crystal 3.35 ct 11.50mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $34.00 USD
    Current Price $17.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 4.30 ct 12.09mm A+
    Save 50%
    Original Price $34.00 USD
    Current Price $17.00 USD

    Herkimer Diamond Quartz Crystal 4.30 ct 12.09mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $34.00 USD
    Current Price $17.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 4.20 ct 13.09mm A+
    Save 50%
    Original Price $34.00 USD
    Current Price $17.00 USD

    Herkimer Diamond Quartz Crystal 4.20 ct 13.09mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

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    Original Price $34.00 USD
    Current Price $17.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 4.35 ct 12.33mm A+
    Save 50%
    Original Price $35.00 USD
    Current Price $17.50 USD

    Herkimer Diamond Quartz Crystal 4.35 ct 12.33mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $35.00 USD
    Current Price $17.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 4.35 ct 12.83mm A+
    Save 50%
    Original Price $35.00 USD
    Current Price $17.50 USD

    Herkimer Diamond Quartz Crystal 4.35 ct 12.83mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $35.00 USD
    Current Price $17.50 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.60 ct 12.30mm AA
    Save 50%
    Original Price $36.00 USD
    Current Price $18.00 USD

    Herkimer Diamond Quartz Crystal 3.60 ct 12.30mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $36.00 USD
    Current Price $18.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.60 ct 11.92mm AA
    Save 50%
    Original Price $36.00 USD
    Current Price $18.00 USD

    Herkimer Diamond Quartz Crystal 3.60 ct 11.92mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $36.00 USD
    Current Price $18.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.55 ct 11.77mm AA
    Save 50%
    Original Price $36.00 USD
    Current Price $18.00 USD

    Herkimer Diamond Quartz Crystal 3.55 ct 11.77mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $36.00 USD
    Current Price $18.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 3.60 ct 11.68mm AA
    Save 50%
    Original Price $36.00 USD
    Current Price $18.00 USD

    Herkimer Diamond Quartz Crystal 3.60 ct 11.68mm AA

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $36.00 USD
    Current Price $18.00 USD
    Save 50%
  • Herkimer Diamond Quartz Crystal 4.50 ct 12.85mm A+
    Sold out
    Original Price $36.00 USD
    Current Price $18.00 USD

    Herkimer Diamond Quartz Crystal 4.50 ct 12.85mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $36.00 USD
    Current Price $18.00 USD
    Sold out
  • Herkimer Diamond Quartz Crystal 4.50 ct 13.99mm A+
    Save 50%
    Original Price $36.00 USD
    Current Price $18.00 USD

    Herkimer Diamond Quartz Crystal 4.50 ct 13.99mm A+

    The smaller jewelry size Herkimer Diamond crystals are the hardest to accumulate in serious quantity. In A grade to AA grade, They make up maybe 3...

    View full details
    Original Price $36.00 USD
    Current Price $18.00 USD
    Save 50%
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