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5 Herkimer Diamond Quartz Crystals USA Natural Double Terminated Set Genuine New York Mineral Specimens Collectors Display with COA
5 Herkimer Diamond Quartz Crystals USA Natural Double Terminated Set Genuine New York Mineral Specimens Collectors Display with COA - Image 2

5 Herkimer Diamond Quartz Crystals USA Natural Double Terminated Set Genuine New York Mineral Specimens Collectors Display with COA

£7.80

All of our Minerals and Crystals are 100% Genuine Specimens & come with a Certificate of Authentication

Pack of 5

Specimen: Herkimer Diamond Rare

Type: Mineral/Crystal

Location: USA

Size (picture scale cube=1cm):  See 1cm scale cube for size

 

Herkimer Diamonds are double terminated quartz crystal famously found in Herkimer County, New York, USA.

A Double Terminated crystal is a crystal with two naturally faceted ends. It is a rarer form of crystal as it forms free-floating in pockets of clay, rather than on one side of a stone.

ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.

**Please note the following:

1) This items picture will change once we update the listing to a new replacement specimen after this specific item has been sold, this action will cause the picture in your purchase history to also change to the new image.

 

2) The picture will also change if you’ve had the item in your basket for a while and someone else buys it during that period (having items stored in your basket does not remove that listing from the view of other customers, meaning it will still be active on eBay).

 

3) We would suggest saving, or taking a screenshot of the items image as soon as you have purchased it for your own records of comparison for once the item has been received in the post. We also keep a record of every image we upload.

(Actual as seen)

Only 1 left in stock

SKU: RP0700 Category:

Description

5 x Herkimer Diamond Quartz Crystals – Natural USA Mineral Specimen Set

This genuine set of 5 Herkimer Diamond crystals from the United States is a stunning collector offering, featuring naturally formed double-terminated quartz crystals renowned for their exceptional clarity and distinctive shape. Despite the name, Herkimer Diamonds are not true diamonds, but highly prized quartz crystals that form with remarkable natural brilliance.

You will receive the exact specimens shown in the photographs. Each crystal has been carefully chosen for its quality, structure, and visual appeal. Full sizing is available in the listing photos. This is a genuine mineral specimen set and includes a Certificate of Authenticity lifetime guarantee generic card.

What Are Herkimer Diamonds?

Herkimer Diamonds are double-terminated quartz crystals (silicon dioxide, SiO₂) found primarily in Herkimer County, New York, USA. They are famous for their natural faceted appearance, high transparency, and sharp terminations at both ends.

Unlike typical quartz points that grow attached to a matrix, Herkimer crystals often develop freely within pockets, allowing them to form complete terminations on both ends. This rare growth habit makes them especially sought after by mineral collectors worldwide.

Quartz crystallises in the trigonal crystal system and is one of Earth’s most abundant minerals, but Herkimer specimens stand out for their unique geological setting and crystal perfection.

Geological Formation & New York Origin

Herkimer Diamonds formed approximately 480 million years ago during the Ordovician Period. They developed within cavities of dolostone in the ancient shallow seas that once covered the region.

The formation process involved:

• Silica-rich fluids entering open pockets within carbonate rock
• Slow crystallisation in enclosed cavities
• Free growth conditions allowing double terminations
• Long geological timescales producing exceptional clarity

This combination of environment and time produced crystals with a natural gem-like brilliance rarely matched by other quartz localities.

Associated minerals in these deposits may include dolomite, calcite, and occasional hydrocarbon inclusions, which can create fascinating internal features.

Appearance, Clarity & Natural Features

Herkimer Diamonds are admired for their:

• Double-terminated crystal habit
• Bright vitreous lustre
• Transparent to translucent clarity
• Natural faceted faces and sharp edges
• Occasional internal inclusions or “rainbow” reflections

Each crystal in this set is unique, with subtle variations in size, form, and internal characteristics. These natural differences highlight the authenticity and individuality of each specimen.

The crystals may range from water-clear to lightly included, depending on their growth environment within the host rock.

Collecting, Display & Gift Appeal

A set of 5 Herkimer Diamond quartz crystals is ideal for collectors, geology enthusiasts, and anyone who appreciates natural crystal formation. These specimens are perfect for:

• Mineral and quartz collections
• Display cabinets or specimen boxes
• Educational geology study
• Photography and decorative arrangements
• Unique gifts for crystal collectors

In spiritual traditions, Herkimer Diamonds are traditionally associated with clarity and heightened awareness; these interpretations are cultural and belief-based rather than scientific or medical claims.

Their natural double-terminated form makes them especially popular as standout collector pieces.

Authenticity & Presentation

• Genuine Herkimer Diamond quartz crystal specimens
• Quantity: 5 crystals included
• Origin: USA (Herkimer County, New York)
• Mineral: Quartz (SiO₂)
• Trigonal crystal system
• Natural double-terminated crystal growth
• Exact specimens shown – you will receive these crystals
• Includes Certificate of Authenticity lifetime guarantee generic card
• Full sizing available in listing photographs

A carefully selected set of five Herkimer Diamond crystals showcasing one of America’s most iconic quartz formations, offering timeless collector appeal and remarkable natural geometry.

Additional information

Weight 45 g

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