Skip to product information
1 of 6

Fluorite Octahedron

Fluorite Octahedron

6 total reviews



 Further information:

Fluorite is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 4 as Fluorite.

Pure fluorite is transparent, both in visible and ultraviolet light, but impurities usually make it a colorful mineral and the stone has ornamental and lapidary uses. Industrially, fluorite is used as a flux for smelting, and in the production of certain glasses and enamels. The purest grades of fluorite are a source of fluoride for hydrofluoric acid manufacture, which is the intermediate source of most fluorine-containing fine chemicals.

Optically clear transparent fluorite lenses have low dispersion, so lenses made from it exhibit less chromatic aberration, making them valuable in optics. Fluorite optics are also usable in the far-ultraviolet and mid-infrared ranges, where conventional glasses are too absorbent for use.

 

  • 3 different sizes available. Please allow for slight variations in sizes and colors. You will receive a specimen similar to the reference photos. 


    Measurement
    Regular price $4.00
    Regular price Sale price $4.00
    Sale Sold out
    Shipping calculated at checkout.
    Matter Subscriber Price:


    View full details

    Customer Reviews

    Based on 6 reviews
    100%
    (6)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    E
    E.D. (Virginia, United States)

    Erin gave this item 5 stars

    M
    M.C. (Virginia, United States)

    I am very happy with this purchase! The crystal is great, with interesting explanations. My daughter was very happy and we will test its fluorescence with UV light (I hope that I have the good wavelentgh)! It was well packed, everything is perfect!

    P
    P.J.

    Shipping , hard to track, was 'intransit' till it arrived (early)
    Made it a better supprise.
    Stones, better than I requested.
    Colors bright, size large, selections exactly as I asked.
    Item perfect for my needs, satisfied, once again,
    Pete
    To all buyers who 'assume' this is standard, in any way I challenge you to go to a walmart and get treated HALF AS WELL.

    A
    A.P. (Florida, United States)
    Nature's D8

    I got a decent Medium crystal with two hues. My sample didn't fluoresce under a UV flashlight; but it's still a big honkin crystal; very pretty in the sunlight.

    A
    A.L. (Texas, United States)
    Beautiful specimen

    Received a gorgeous two tone (blue to clear) stone that was significantly larger than I expected, at the absolute greatest end of the medium size range. I am considering another purchase of the smaller size and will update if I do so.

    J
    J.G. (Oklahoma, United States)
    gorgeous

    love the colours

    AUTHENTICITY GUARANTEED

    We only list 100% verified authentic items. We work with reputable collectors, and regularly consult with our network of scientists and experts.

    • Free Shipping

      Orders ≥$50 qualify for free US shipping
      Orders ≥$100 qualify for free global shipping

    • Secure Payments

      Pay how you like: credit card, PayPal, After Pay, Shop Pay, Venmo, Apple/Google/Meta Pay & crypto

    • Simple Returns

      Change your mind? No problem. Enjoy easy returns within 30 days.

    similar items_

    WE TAKE SCIENCE SERIOUSLY

    You deserve better than craft store science products. And we think learning is more impactful when you're holding a tangible piece of what you're learning about. That's why Stemcell exists.

    We're dedicated to providing the best scientific products available—whether they're fragments of scientific importance, experimental activities, or just interesting things that scratch your curiosity itch.

    With every new product launch, our list of new ideas gets longer rather than shorter. So check in often for our latest projects, and thanks for being a part of our endeavor to make the world a smarter place to live.

    Believe in yourself; for everything else, there's science.

    — TERRY MUDGE, FOUNDER & SCIENTIFIC DIRECTOR