• May include: A raw fluorite crystal specimen featuring a cluster of cubic formations. The mineral displays a vibrant gradient of deep royal blue, teal, and translucent seafoam green hues with sharp geometric edges and a naturally faceted, crystalline texture.
  • May include: An informational graphic titled How Does a You Pick Item Work? explaining a selection process. It features four crystal illustrations labeled A, B, C, and D in black, purple, red, and light purple, alongside a dropdown menu interface.
  • May include: Two clusters of green fluorite crystals labeled A and B, shown in both indoor and outdoor lighting. Cluster A features a dense arrangement of small, translucent green crystals. Cluster B displays larger, deep green and blue crystals.
  • May include: Two sets of raw fluorite crystal clusters labeled I and J, showing variations in color between indoor and outdoor lighting. The crystals display deep green, blue, and purple hues with geometric, cubic formations and rough, textured bases.
  • May include: A mineral specimen featuring translucent, deep green cubic fluorite crystals clustered on a dark, textured matrix. The image displays two distinct specimens labeled A2 and B2, each shown from both inside and outside lighting perspectives.
  • May include: Two clusters of raw fluorite crystals labeled I2 and J2, shown in both indoor and outdoor lighting. The specimens feature translucent green and deep purple cubic crystals embedded in a rough, greyish-brown mineral matrix base.
  • May include: A collection of green fluorite crystal specimens labeled A3 and B3, shown under indoor light and daylight. The crystals feature geometric, cubic structures with translucent and opaque green facets, displaying variations in color depth.
  • May include: Two clusters of green fluorite crystals labeled E3 and F3, shown under indoor light and daylight. The E3 specimen features multiple sharp, translucent green cubic crystals, while the F3 specimen displays larger, blocky green crystals.
  • May include: A collection of green fluorite crystal clusters labeled G3 and H3, shown under indoor light and daylight. The specimens feature translucent, geometric cubic formations with deep emerald hues and visible mineral matrix bases.
  • May include: Two clusters of green fluorite crystals labeled K3 and L3, shown under indoor light and daylight. The specimens feature translucent, cubic crystal formations with varying shades of deep green and blue, set on a rocky base.
  • May include: An informational graphic titled Why Shop Genuine Gem Co? featuring five purple checkmark icons next to text points: Authenticity Guaranteed, ID cards included with all specimens, Quality + Variety, Average Rating: 5.0 (1.1k), and Trusted by 2500+ collectors worldwide.
  • May include: A raw fluorite crystal specimen featuring a cluster of cubic formations. The mineral displays a vibrant gradient of deep royal blue, teal, and translucent seafoam green hues with sharp geometric edges and a naturally faceted, crystalline texture.
  • Product video
  • May include: An informational graphic titled How Does a You Pick Item Work? explaining a selection process. It features four crystal illustrations labeled A, B, C, and D in black, purple, red, and light purple, alongside a dropdown menu interface.
  • May include: Two clusters of green fluorite crystals labeled A and B, shown in both indoor and outdoor lighting. Cluster A features a dense arrangement of small, translucent green crystals. Cluster B displays larger, deep green and blue crystals.
  • May include: Two sets of raw fluorite crystal clusters labeled I and J, showing variations in color between indoor and outdoor lighting. The crystals display deep green, blue, and purple hues with geometric, cubic formations and rough, textured bases.
  • May include: A mineral specimen featuring translucent, deep green cubic fluorite crystals clustered on a dark, textured matrix. The image displays two distinct specimens labeled A2 and B2, each shown from both inside and outside lighting perspectives.
  • May include: Two clusters of raw fluorite crystals labeled I2 and J2, shown in both indoor and outdoor lighting. The specimens feature translucent green and deep purple cubic crystals embedded in a rough, greyish-brown mineral matrix base.
  • May include: A collection of green fluorite crystal specimens labeled A3 and B3, shown under indoor light and daylight. The crystals feature geometric, cubic structures with translucent and opaque green facets, displaying variations in color depth.
  • May include: Two clusters of green fluorite crystals labeled E3 and F3, shown under indoor light and daylight. The E3 specimen features multiple sharp, translucent green cubic crystals, while the F3 specimen displays larger, blocky green crystals.
  • May include: A collection of green fluorite crystal clusters labeled G3 and H3, shown under indoor light and daylight. The specimens feature translucent, geometric cubic formations with deep emerald hues and visible mineral matrix bases.
  • May include: Two clusters of green fluorite crystals labeled K3 and L3, shown under indoor light and daylight. The specimens feature translucent, cubic crystal formations with varying shades of deep green and blue, set on a rocky base.
  • May include: An informational graphic titled Why Shop Genuine Gem Co? featuring five purple checkmark icons next to text points: Authenticity Guaranteed, ID cards included with all specimens, Quality + Variety, Average Rating: 5.0 (1.1k), and Trusted by 2500+ collectors worldwide.
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You Pick! Color Changing Fluorite from Diana Maria Mine, UK

Item highlights

  • Materials: Crystal, Fluorite, Rock crystal, Stone

Seller's description

*Size Info for Each Piece Below*

OPTIONS:
A: Northern lights pocket. 3.2 oz (90g), 6.4 cm. Gemmy, ultra-clear cluster.
J: Northern lights pocket. 3.7 oz (106g). 6.53 cm. Large and long piece
-------
B2: Greedy hog pocket. 4.2 oz. 6.5cm. So much galena on this one - it's heavy!
J2: Greedy hog pocket. 2.2 oz. 5.9 cm. A lovely scattering of equal-sized fluorite and galena crystals.
-------
A3: Northern lights pocket. 5.83 cm.
B3: Northern lights pocket. 6.70 cm.
F3: Northern lights pocket. 5.38 cm.
H3: Northern lights pocket. 6.08 cm
K3: Northern lights pocket. 6.20 cm.

Discover the captivating beauty of British fluorite with these exceptional "you pick" specimens from the Northern Lights Pocket, found deep within the River Catcher Vein of the Diana Maria Mine, Weardale, County Durham, England. Each piece exhibits daylight fluorescence from deep emerald green to bluish purple. To see the pieces in their pure emerald green form, you have to view them either in a room with no windows or after sunset. They are SO incredibly sensitive to UV light that any daylight coming in from a window will cause a slight color change! This occurs due to their inclusion of yttrium, a rare earth element.

These specimens were mined by UK Mining Ventures, who uncovered the Northern Lights Pocket in recent years during their ongoing exploration of Diana Maria's lesser-exposed veins. The fluorite here is distinguished by its high clarity, vibrant zoning, and the dramatic fluorescence and color shift that collectors worldwide now associate with this specific pocket. Each piece varies in shape and structure — from sharp-edged cubes to intricate intergrown clusters — but all show the trademark color interplay that earned this pocket its celestial name. Other pieces hail from the Greedy Hog pocket, which produced fluorite with characteristics and color similar to the Northern Lights Pocket, but with the addition of Galena.

Photos show each piece in indoor lamp light and outdoor direct/indirect sunlight.


ABOUT DIANA MARIA MINE
The Diana Maria Mine, part of the historic Weardale mining district, is renowned for yielding some of the most vividly colored and fluorescent fluorite in the world. The River Catcher Vein is a lesser-known but geologically fascinating structure within the mine, branching off from the more famous Rogerley Vein.

The Northern Lights Pocket, discovered and mined by UK Mining Ventures, is one of the most visually impressive finds from the vein. The fluorite from this pocket is especially notable for its photochromism — the ability to change color under various types of light — and for the deep saturation and zoning of blue, green, and purple hues. Under daylight or LED light, the fluorite glows with cool teal or blue tones, while under incandescent light it shifts dramatically to purples and magentas. Additionally, the specimens fluoresce bright blue-violet under UV light, adding another layer of visual intrigue.

These features, combined with the clean crystal forms and scarcity of Northern Lights material on the market, make these specimens highly desirable for collectors seeking rare and dynamic examples of English fluorite.

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Price:$82.00

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Shipping & return policies
  • Get it by
    Oct 24-Nov 2
  • Exchanges
    Accepted within 7 days
  • Cost to ship
    FREE to United States, 43215.

Reviews for this item

What buyers say, summarized by AI: Looks great Fast shipping

5.0

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(14 reviews)

5.0 Item quality
5.0 Shipping
5.0 Customer service
100% Buyers recommend
Filter by category
5 out of 5 stars 5 This item

Nancy Oct 4, 2026

A beautiful and special piece of fluoride from a well-known mine. The fluorescence is unbelievably beautiful. 🤩💫✨

Nancy Oct 4, 2026

5 out of 5 stars 5 This item

Naufal Jun 28, 2026

BEAUTIFUL piece and fast shipping. Would definitely shop here again if/when I want to add to my collection in the future.

Naufal Jun 28, 2026

5 out of 5 stars 5 This item

Crystal May 30, 2026

beautiful fluorite. the color is to die for. have not seen it change colors yet.

Crystal May 30, 2026

Response from Riley Hess

Thank you so much for your lovely review! We’re delighted you’re happy with your purchase. We can’t wait to share more amazing pieces with you.

5 out of 5 stars 5 This item

Devin Feb 26, 2026

First delivery got damaged during shipment, seller was very prompt to respond, let me pick a replacement and promptly shipped me a replacement. Very kind and professional, highly recommended!

Devin Feb 26, 2026

Response from Riley Hess

Thank you so much for your thoughtful review. We truly appreciate your understanding and the opportunity to make things right. Your trust means the world to us, and we’re grateful you chose our shop.

Seller's description

Specifications

May include: A raw fluorite crystal specimen featuring a cluster of cubic formations. The mineral displays a vibrant gradient of deep royal blue, teal, and translucent seafoam green hues with sharp geometric edges and a naturally faceted, crystalline texture.

*Size Info for Each Piece Below*

OPTIONS:
A: Northern lights pocket. 3.2 oz (90g), 6.4 cm. Gemmy, ultra-clear cluster.
J: Northern lights pocket. 3.7 oz (106g). 6.53 cm. Large and long piece
-------
B2: Greedy hog pocket. 4.2 oz. 6.5cm. So much galena on this one - it's heavy!
J2: Greedy hog pocket. 2.2 oz. 5.9 cm. A lovely scattering of equal-sized fluorite and galena crystals.
-------
A3: Northern lights pocket. 5.83 cm.
B3: Northern lights pocket. 6.70 cm.
F3: Northern lights pocket. 5.38 cm.
H3: Northern lights pocket. 6.08 cm
K3: Northern lights pocket. 6.20 cm.

Discover the captivating beauty of British fluorite with these exceptional "you pick" specimens from the Northern Lights Pocket, found deep within the River Catcher Vein of the Diana Maria Mine, Weardale, County Durham, England. Each piece exhibits daylight fluorescence from deep emerald green to bluish purple. To see the pieces in their pure emerald green form, you have to view them either in a room with no windows or after sunset. They are SO incredibly sensitive to UV light that any daylight coming in from a window will cause a slight color change! This occurs due to their inclusion of yttrium, a rare earth element.

These specimens were mined by UK Mining Ventures, who uncovered the Northern Lights Pocket in recent years during their ongoing exploration of Diana Maria's lesser-exposed veins. The fluorite here is distinguished by its high clarity, vibrant zoning, and the dramatic fluorescence and color shift that collectors worldwide now associate with this specific pocket. Each piece varies in shape and structure — from sharp-edged cubes to intricate intergrown clusters — but all show the trademark color interplay that earned this pocket its celestial name. Other pieces hail from the Greedy Hog pocket, which produced fluorite with characteristics and color similar to the Northern Lights Pocket, but with the addition of Galena.

Photos show each piece in indoor lamp light and outdoor direct/indirect sunlight.


ABOUT DIANA MARIA MINE
The Diana Maria Mine, part of the historic Weardale mining district, is renowned for yielding some of the most vividly colored and fluorescent fluorite in the world. The River Catcher Vein is a lesser-known but geologically fascinating structure within the mine, branching off from the more famous Rogerley Vein.

The Northern Lights Pocket, discovered and mined by UK Mining Ventures, is one of the most visually impressive finds from the vein. The fluorite from this pocket is especially notable for its photochromism — the ability to change color under various types of light — and for the deep saturation and zoning of blue, green, and purple hues. Under daylight or LED light, the fluorite glows with cool teal or blue tones, while under incandescent light it shifts dramatically to purples and magentas. Additionally, the specimens fluoresce bright blue-violet under UV light, adding another layer of visual intrigue.

These features, combined with the clean crystal forms and scarcity of Northern Lights material on the market, make these specimens highly desirable for collectors seeking rare and dynamic examples of English fluorite.

  • Handpicked by
    GenuineGemCo
  • Materials
    Crystal, fluorite, rock crystal, stone

Delivery details and policies

  • Get it by
    Oct 24-Nov 2
  • Exchanges
    Accepted within 7 days.
  • Ships from
    Atlanta, GA
  • Cost to ship
    FREE to United States, 43215

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Meet your seller

GenuineGemCo
Riley Hess
GenuineGemCo ·

Atlanta, Georgia

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 4.9
·
4.6k sales
·
4 years on Etsy

Usually responds in a few hours

Smooth shipping Has a history of shipping on time with tracking.

Rave reviews Average review rating is 4.8 or higher.

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