Geodes : Natures Treasures


Geodes : Natures Treasures

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GB-80000156
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1.95 lbs
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$21.95
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An all new, encompassing book about geodes!

Welcome to nature's
mysterious world of geodes!

In this book two renowned experts share their lifelong passion for geodes and their extensive knowledge of world-class geode deposits as they present the latest theories on the formation and occurrence of these amazing mineral gifts of nature.

  • Visit the geode mines of Northern Mexico and Southern Brazil with Brad Cross
  • Learn the geode mining process and how the astonishing treasures hidden inside are uncovered.
  • Travel with June Culp Zeitner as she explores vast geode deposits throughout the Midwestern United States that provide a recorded history of the ancient seas that once covered the land.
  • Discover Florida's ocean harvest of unparalleled agatized geodes.
  • Meet the close cousins of geodes - thundereggs, septarians, and concretions.

The most comprehensive book ever written on geodes of the Americas - a definitive reference for serious collectors and a delightful mineral exploration for both experts and novices.

Over 140 full-color photos of geodes that defy description!

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  • BelOMO 20x Quadruplet Loupe Magnifier

    BelOMO 20x Quadruplet Loupe Magnifier

    The BelOMO 20x Quadruplet Loupe Magnifier has a viewing area of .28" (7mm), much larger than the Bausch & Lomb Hastings 20x Triplet Magnifier. The large .5" (17.5mm) 4 elements gather lots of light to provide this quadruplet loupe with a bright and clear view. 

    The following details are true of any lens such as a loupe magnifier, microscope, telescope, camera lens or other high magnification lens.

    A 20x magnifier should NOT be the only magnifier you own. It's just too much magnification for normal usage. For instance, if you're using it to look at newsprint you would see at most a 4 letters at a time.

    Must you have such strong magnification?

    You'll be incredibly close to the object you are examining. Almost touching. For a 10x the focus distance is around 3/4'' but for a 20x it's about 5/16''.

    The 20x power magnification provides a very strong level of magnification which works best on flat objects like coins or stamps or surfaces of objects. However, only a small area (field of view) will be visible. Think of examining a quarter and all you can see is the date but it's highly magnified.

    The stronger the magnification means the less depth of field the lens will have. Depth of field is the vertical relief that appears in focus on an object having an irregular surface like a rock or mineral. You'll have to ''dance'' the lens around more on rocks and minerals but the portion of the object you're viewing will be highly magnified. The limited depth of field also make a 20x the most magnification you'll want to use when hand holding a loupe. With a higher magnification the slightest movement in you hand will cause the image to continually move in and out of focus.

    The high magnification works well when you need to closely examine the surface of a rock or mineral, the surface of a gem for minute scratches, small areas of coins and stamps or any other object where you need to examine a small area under high magnification. It's great for reading laser inscriptions on diamonds.

    The 20x power is a favorite of sharpeners of knives and razors, examining phonograph needles and pen nibs because you can see such edge detail.

    The larger size of this lens compared to other 20x loupes means it will capture lots of light for a very bright view. This is also a loupe that you can hold comfortably in your hand unlike the smaller than a dime lens from Bausch & Lomb.

    The housing and cover are machined metal and coated with a matte black finish and assembled using flathead screws. Belarusian Optical and Mechanical Association (BelOMA), makers of sights for guided weaponry, camera lenses, and other optical components manufacturers these loupes.

    Highly recommended by the Amateur Geologist. The BelOMO loupes are the loupes we always use though it's the 10x that we typically carry in the field. If you MUST have 20x power then this is a great lens to have.

    Don't let this price fool you. The BelOMO loupe is a FANTASTIC buy. These are quality lenses that stand on their own against the higher priced competition. Take advantage of the recovering Belarus economy and a military supplier finding other revenue streams in a capitalistic market.

    Each BelOMO loupe we ship is custom treated to prevent the screws from coming loose with usage.

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  • Gem Identification Made Easy : A Hands-On Guide to More Confident Buying & Selling

    New, revised, expanded edition of the first and only book of its kind. Covers the latest gems, synthetics, treatments, and instruments. Easy to use. Practical. Non-technical. Shows how to identify diamonds, colored gemstones, and pearls, and separate them from fakes and look-alikes. Explains what instruments are needed, how to use them, where to get them, and what should be seen for each gemstone.No science background necessary.Faster than you can imagine, anyone can learn to identify most of the gems and imitations found in the marketplace. This practical volume is the key to avoiding costly mistakes and recognizing profitable opportunities. Essential reading for collectors, investors, jewelry lovers, hobbyists, jewelers, antique dealers, and gemology students. With this highly accessible guide, anyone can begin to master gem identification.Selected Contents:Setting up a basic lab.Description of Each Instrument: What It Will Show & How to Use It.Dark Field Loupe - Synthetic Emerald Filters - Immersion Cell - Synthetic Diamond Detector - Loupe - Chelsea Filter - Electronic Diamond Tester - Refractometer - Ultraviolet Lamp - Microscope - Spectroscope - Polariscope - DichroscopeWhat to Look For, Gem by GemAntique & Estate Jewelry - The True Test for the Gem Detective.Dyeing - Composite Stones - Foil Backing - SubstitutionsAppendices: Charts and Tables of Gemstone Properties, Schools, Laboratories, and more.
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  • Within the Stone





    Inside the front cover, Robert Hutchinson writes:


    It began innocently enough. While photographing the Painted Desert, Atkinson became intrigued with the brilliant colors in the petrified wood scattered on the ground. He brought home some polished rocks, photographed them under glare-free lighting, and was captivated. The photographs looked more like paintings of forgotten dreams than either rocks or photographs. Atkinson proceeded to photograph thousands of art-quality polished rocks, bought or borrowed from international dealers and collectors, and to refine his photographic techniques.


    From these thousands of photographs, Atkinson has chosen for ?Within the Stone÷ seventy-two that have yielded the most striking, the most poetic, and the most ineffable images. Atkinson opens a vault beneath our feet, revealing to our astonished eyes the tumult of color, form, and desire hidden ?Within the Stone.÷ He invites us to enter the dreams of Gaia. Some of these are epiphanies so far removed from our mundane experience as to beggar ordinary language and analogy.


    Seventy literary pieces were commissioned for this book from seven writers. Every one of the writers has conspicuous attainments in both scientific and artistic modes. Each writer was asked to free-associate with his or her ten assigned photographs as though they were high-level Rorschach patterns. The seven contributors are Diane Ackerman (poet and psychologist), Philip Ball ( Nature editor and dramatist), John Horgan (science writer and philosopher), Andrew Revkin ( New York Times reporter and Hollywood screenplay writer), Dorion Sagan (science writer and novelist), Tyler Volk (NASA biologist and architect), and David Zindell (science fiction novelist and mathematician).


    In an appendix, mineralogy experts Si & Ann Frazier and Robert Hutchinson provide mineral commentary for each specimen.





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  • BelOMO 7x Triplet Loupe Magnifier

    BelOMO 7x Triplet Loupe Magnifier

    The BelOMO 7x Triplet Loupe magnifier has a viewing area of 22mm, much larger than the Bausch & Lomb Hastings 7x Triplet Magnifier. The 3 elements making up this achromatic triplet provide a bright and clear view. The 7x power magnification provides a nice level of magnification, outstanding depth of field (the area that appears in focus on an object having an irregular surface like a rock or mineral) and the large lens size captures lots of light for a very bright view.

    The housing and cover are coated with a matte black finish and assembled using flathead screws. Screws allow you to adjust the swing tension to your liking. Belarusian Optical and Mechanical Association (BelOMA), makers of sights for guided weaponry, camera lenses, and other optical components manufacturers these loupes.

    We highly recommend this loupe! The BelOMO loupes are the loupes we always use though it's the 10x that we typically carry in the field. The 7x has almost that magnification but provides a larger field of view. Of course the larger glass lens captures more light making the image even brighter and easier to see.

    Don't let this price fool you. The BelOMO loupe is a FANTASTIC buy. These are quality lenses that stand on their own against the higher priced competition. Take advantage of the recovering Belarus economy and a military supplier finding other revenue streams in a capitalistic market.

    Each BelOMO loupe we ship is custom treated to prevent the screws from coming loose with usage.

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  • Lanyard, BelOMO Woven Logo, 3/4in Nylon with Quick Release Buckle and Split Ring

    Lanyard, BelOMO Woven Logo, 3/4in Nylon with Quick Release Buckle and Split Ring

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    Here is a heavy duty 3/4" nylon loupe lanyard with a quick release buckle and a split ring. Disconnect the buckle when you don't need the neck lanyard. But don't set the loupe down and walk way!



    Use the split ring on loupes with a mounting hook. Remove the split ring, remove one screw on your BelOMO loupe, swivel the frame out of the way and slide the end over the support shaft. (We suggest that you purchase the loupe with the lanyard already installed.)

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  • Deluxe Moh's Mineral Hardness Pick Set

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    Hardness is an important and quantifiable physical characteristic of a mineral and in your effort to identify an unknown mineral, the hardness, if known, combined with other properties, can narrow your search to just a handful of possibilities. Simply scratch a smooth surface of your unknown mineral with the picks of various indicated hardness. As an example, if a No. 5 pick scratches the mineral, but a No. 4 pick does not, then your mineral hardness is 4.5. Then compare this against a table of minerals listing hardness values to aid in identifying the unknown mineral.
    The Deluxe Mohs' Hardness Pick Set from Mineralab is unique in that, unlike other mineral hardness test tool that use minerals or crystal points, Mineralab picks are made of metals and alloys of hardness values equal to 2 through 9 on Mohs hardness scale. Because the picks are made of metal, they are easily ground to sharp points which will not break off and which can be easily sharpened.

    What is included in the Mineralab's Deluxe Mohs' Hardness Pick Set?

    • Four double-ended picks with eight points comprising 2 and 3, 4 and 5,
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    • High quality brass pinch vises.

    • A glass plate (hardness of about 5.5) which, when scratched,
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    • A second hardness plate with a hardness value of 3.5.

    • A streak plate for testing a mineral’s streak color.

    • A magnet to test magnetic rocks such as magnetite and pyrrhotite.

    • A 100 grit polishing stone to keep the points sharp.

    • An attractive, mahogany-finished and compact wooden case.

    • Complete usage instructions.


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      pick body is color coded for quickly finding the desired pick.

    • Hardness points can be easily and inexpensively replaced without having to
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    • Compact. The wooden storage case is only 7" tall by 2.5" wide.

    • Also use to test hardness of various materials encountered in the industrial,
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    • 1 Year Warranty
    If you are ordering only a Deluxe Moh's Hardness Pick Set you can save money on shipping by choosing USPS Priority Mail. We will use a USPS Priority Mail Small Flat Rate Box and I'll adjust your total to pass the savings back to you.
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  • BelOMO 10x Triplet Loupe Magnifier

    BelOMO 10x Triplet Loupe Magnifier

    The BelOMO 10x21mm(.85") triplet loupe magnifier has a viewing area of 0.65 inch (17mm), much larger than the Bausch & Lomb Hastings Triplet Magnifier. The 3 elements making up this achromatic triplet provide a bright and clear view. The 10x power magnification provides the best magnification to depth of field ratio and is the most popular power for a hand held magnifier. The housing and cover are machined metal and coated with a matte black finish and assembled using flathead screws. Belorussian Optical and Mechanical Association (BelOMA), makers of sights for guided weaponry, camera lenses, and other optical components manufacturers these loupes.

    We highly recommend this loupe. This is the lens we use all the time.

    Don't let this price fool you. The BelOMO loupe is a FANTASTIC buy. These are quality lenses that stand on their own against the higher priced competition. Take advantage of the recovering Belarus economy and a military supplier finding other revenue streams in a capitalistic market. Over 10,000 other geologists, rockhounds, stamp collectors, botanist, surgeons, hobbyist and people from all walks of life have.
     
    Unsure? We encourage you to just Google BelOMO and peruse the rich praise for this loupe.

    Each BelOMO loupe we ship is custom treated to prevent the screws from coming loose with usage.

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  • Rockhound Emblem Sticker, Large

    Let everyone know that you're a rockhound! Put one (or more) of these stickers on your vehicle and meet other rockhounds everywhere, not just on a dig. The Rockhound Emblem sticker is 4 inches in diameter. (The Rockhound Emblem is Trademarked.)
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    $0.50

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