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jasper
Jasper Value, Price, and Jewelry Information
Jasper is an opaque, solid or patterned variety of cryptocrystalline quartz. All types of jasper take an excellent polish, are...
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“Genesis And Classification Of Agates And Jaspers: A New Theory” Book Review
“Genesis And Classification Of Agates And Jaspers: A New Theory” insightfully explains the formation of these gems and features beautiful...
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How To Make A Rock Lamp
With the right tools and a little drilling know-how, you can create a rock lamp with an agate or jasper...
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Alternative Birthstones
Not happy with your birthstone? Explore these alternative birthstones associated with astrological signs, angels, the hour or day of your...
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List of False or Misleading Gemstone Names
A list of False or Misleading Gemstone Names and its Actual Gemological Name. Gathered by the source "Gemstones of the...
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Common Gemstone Treatments Cheat Sheet
There are so many common gemstone treatments available today that keeping track of them can be difficult. This list and...
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Table of Gems Ordered by Crystal System
This table contains a selection of minerals gemologists may encounter as jewelry stones or gem specimens. The gems are sorted...
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A Visitor’s Guide to Colorado Gemstones
Colorado has a lot to offer gemologists and rock hunters. Before you visit, learn about Colorado gemstones as well as...
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The Foundation Stones of the New Testament
Commentaries on the foundation stones of the Book of Revelation influenced the development of the Western birthstone system. Learn more...
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What Were the Gemstones of the Breastplate of Aaron?
In Exodus, the breastplate of Aaron was said to hold 12 gems. Discover the historical debate around it and learn...
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Suiseki, Glyptography, and Other Rock Artistry Techniques
Not all creative lapidary work involves cutting gems. Rock artistry techniques like suiseki and glyptography can offer some imaginative possibilities....
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The Sacred Emerald Buddha
Carved in Thailand in 2006 from a 3,600-ct emerald, “The Sacred Emerald Buddha” has a message of peace. Read the...
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How Does Quartz Form?
Quartz is one of the most abundant minerals on earth. Learn how quartz forms and how its most popular varieties...
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Crystalline Quartz Buying Guide
Although often overlooked, quartz is available in many styles at reasonable prices. Our crystalline quartz buying guide can help you...
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Red Gemstones: Ruby, Spinel, Garnet, and Other Great Picks for Jewelry
Red gemstones are popular choices for engagement rings and fine jewelry. The three most popular stones are ruby, garnet, and...
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Specific Gravity Values of Selected Gems
Measuring specific gravity helps gemologists identify gemstones. The following table lists the specific gravity values for a variety of gem...
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History of Birthstones
What is a Birthstone?
Birthstones have become very popular for gift-givers and gem-lovers for their dazzling array of colors and...
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Lapidary Health Hazards and Safety Tips
Whether you’re a new or experienced gem cutter, brush up on safety procedures. Learn about lapidary health hazards and how...
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A Guide to Gem Classification
Gemologists use several different gem classification methods. Learn how the most common systems work and what they cover as well...
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Table of Refractive Indices and Double Refraction of Selected Gems
Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for selected gemstones.
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The Mohs Hardness Scale and Chart for Select Gems
The Mohs hardness scale measures a mineral's resistance to scratching. Find the traditional scale here and a chart of select...
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Jade Buying Guide
Learn everything about jade buying with our comprehensive guide. Discover quality factors, treatments, and pricing for jadeite vs nephrite jade...
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Lapidary Fundamentals: Gemstone Tumbling
Gemstone tumbling is the simplest and least expensive lapidary art to learn. These guidelines can help you choose the right...
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Gemstone Magnetism: The Forgotten Property
Although gemstone magnetism isn't commonly tested, it can help gemologists distinguish similar looking gems. Learn how to analyze this property....
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Gemstone Toxicity Table
Gem faceters and jewelry enthusiasts alike should learn about gemstone toxicity. This table has toxicity ratings for 280+ gems, based...
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A Guide to Gem Cutting Styles
Gem cutting styles refer to the shape and arrangement of facets. The three most basic styles are brilliant, step, and...
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Idar Oberstein Gem Cutting: What Is It?
The demand for the next new thing defines the Modern Age. However, this expectation of significant developments in rapid succession...
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Public Perception of Synthetic Diamonds Impacts Gem Market
Ever since synthetic diamonds became a significant player in the wider diamond marketplace in 2018, gem news has been dominated...
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Gem, Mineral, and Rock Scanner Identification Apps Review
How accurate are gem, mineral, and rock scanner identification apps? Our review covers the strengths and weaknesses of over 20...
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Lapidary Fundamentals: Cutting Rough Stones
Learn the best techniques and tools for cutting rough stones. Making small pieces from big pieces is one of the...
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Mineralogy of Phyllosilicates and Tectosilicates
The silicate subgroups of phyllosilicates and tectosilicates include minerals used in industry and jewelry. Learn how to identify them.
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