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sapphire
Sapphire Value, Price, and Jewelry Information
Few gems have held our attention over millennia as well as sapphire. The pure blue colors and excellent durability of...
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Sapphire Facet / Faceting Rough
Practical tips on Sapphire Facet. Covers Sapphire Faceting related issues, news, research, tips, and guide. Includes helpful details about the...
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Ruby Sapphire Facet / Faceting Information
Tips and details about Ruby Sapphire faceting. Brief and straightforward information on Ruby Sapphire Faceting. Choose cuts that best fit...
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Why We Love Montana Sapphires and Yogo Sapphires
With rich cornflower blue Yogo sapphires and fancy-colored gems in any color of the rainbow, Montana sapphires are a great...
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Umba Sapphire Parcel Colors
Get the insight of Jeff on all your concerns about Gemstones. "Are all Sapphires blue?". Check out the Umba Sapphire...
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Padparadschah Sapphire Faceting Information
Up to date information on Padparadschah Sapphire faceting. Includes helpful information like tips, guides and details related to Padparadschah Sapphire...
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Teal Sapphires: Gemstones of Harmony
Teal sapphires feature blue and green colors in a beautiful combination. Learn all about these gems and why they might...
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Mermaid Sapphires: the Next Big Thing in Engagement Ring Stones
Mermaid sapphires are the rarest type of teal sapphires. Learn all about these blue-green gems that could soon become popular...
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Sapphire Buying Guide
Long associated with royalty, sapphires are some of the most popular (and expensive) gems in the world. Our sapphire buying...
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What are Lab-Grown Sapphires?
Learn how lab grown sapphires are made and how gemologists can distinguish natural from synthetic sapphires.
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Color Change Sapphire Faceting Information
Color Change Sapphire is unique and change different colors with different lighting view. This is a source on guides for...
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How to Orient Sapphires with Silk Inclusions
Silk inclusions in sapphires are hard to detect. Learn to pick the best orientation and cut for these gems. You...
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Sapphire Symbolism
Beautiful blue colors and the star stone effect have influenced sapphire symbolism through the ages. Learn more about the legends...
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Sapphire Engagement Ring Guide: Something Blue
Rare, beautiful, and expensive, sapphires will really wow when brides need “something blue.” When you’re shopping for sapphire engagement ring...
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Padparadscha Sapphire Buying Guide
Padparadscha sapphires get their name from the Sinhalese word for “lotus colored.” This rare and elusive gem generates some debate...
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Gem Origin Opinions: When Gemology Labs Agree to Disagree on Sapphire Origins
Why do gemology labs sometimes have different gem origin opinions, especially for sapphires? Learn the science and history behind the...
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What is the Best Synthetic Corundum?
There are many ways to grow ruby and sapphire in a lab. However, determining the best synthetic corundum for faceting...
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September Birthstone: Sapphire
What is the birthstone for September?
The birthstone for September is sapphire. Sapphires are members of the gem species corundum....
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Appraising Blue Sapphires
Appraising blue sapphires is a critical skill for any jeweler or gemologist. Learn the basics you’ll need to evaluate one...
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Ruby and Sapphire Origins
Ruby and sapphire origins greatly affect the values of these prized gems. Learn where these stones occur and how inclusions...
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Sapphire Mining in Montana
What’s sapphire mining like? Follow Jeff Moriarty of Moriarty’s Gem Art as he travels to Montana in search of amazing...
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Sapphire “RB.v” : Faceting Design Diagram
Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this...
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White Sapphires vs Diamonds
Do white sapphires make good alternatives to diamonds? Compare their qualities and learn how to choose the right engagement ring...
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What are the Best Rough Sapphire Stones?
The best rough sapphire stones may come from different sources, depending on the color you want. However, valuable blues may...
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Parti Sapphires: the Colored Gemstones for 2021
Parti sapphires can show two or three colors at the same time. Learn why recent trends will soon make these...
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Star Sapphire Value, Price, and Jewelry Information
Star sapphire is a type of sapphire that displays asterism, a star-like optical effect.
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Several Ways to Polish Sapphires
Jeff R Graham shares his opinions and thoughts on various topics on Just Ask Jeff. See what his answers are...
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Ruby and Sapphire Grading Tools
What ruby and sapphire grading tools does a novice gemologist need? Learn how basic gemological equipment can help you identify...
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Padparadscha Sapphire Value, Price, and Jewelry Information
Padparadscha sapphires show a blend of orange and pink colors, one of the rarest of all sapphire color combinations. Padparadschas...
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What’s the Difference Between Rubies and Pink Sapphires?
How do gemologists distinguish between rubies and pink sapphires? Learn about the chemistry of corundum and the history of the...
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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. However, the gemological identities of the stones, like...
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How Do Rubies and Sapphires Form?
The geological conditions in which rubies and sapphires form are rare and extreme. Learn how these popular gems develop and...
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Classic Engagement Ring Stones
Emerald, ruby, sapphire, and diamond are the most popular choices for classic engagement ring stones. Learn more about these traditional...
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What is the Best Lap for Polishing Sapphire?
Polishing sapphire gemstones can be tough on laps. Learn the pros and cons of different laps and some techniques to...
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Spinel
Spinel has played an important part in gem history. Prior to the last century, it was impossible to distinguish from...
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Corundum Treatments
Corundum gems receive more types of treatments than any other stones. Learn how to test rubies and sapphires for signs...
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An Interview with Sapphire Expert Jeffery Bergman
In a recent interview, Jeffery Bergman talks about his decades-long career as a sapphire expert and connoisseur and offers his...
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A Step-Cut Montana Sapphire Design
Watch lapidarist Jim Buday facet a step-cut Montana sapphire design. This version of the traditional cut produces a very bright...
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Ruby and Sapphire Survey: Where Do You Draw the Line?
Our survey asked for your input on the age-old question: where is the line between ruby and sapphire? The results...
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Eight Famous Sapphires and the Stories Behind Them
Large, beautiful, and historically important, these eight famous sapphires have fascinating stories to tell. Learn what makes them so special....
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Color Change Sapphire Value, Price, and Jewelry Information
Color change sapphires are those that change color between light sources.
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How to Find Curved Striae in Synthetic Ruby and Sapphire
Curved striae or lines are a telltale sign of synthetic ruby and sapphire. If you're having trouble seeing them, here...
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Four Square Sapphire: Faceting Design Diagram
Information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this cut...
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Corundum Polishing Survey Results
The corundum gem family includes ever popular rubies and sapphires. Our IGS member survey results offer some corundum polishing recommendations....
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How to Cut a Simple Heart Ruby or Sapphire
Cutting corundum gems — rubies and sapphires — can be difficult. Learn how to handle this material by faceting a...
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Vintage Jewelry with Synthetic Color Change Sapphire
The concept of a “trend” is an important one in the jewelry world. Having a good understanding of historical trends...
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Seventh Anniversary Gift Guide: Yellow Sapphire
Congratulations on making it to lucky number seven! This is a big milestone anniversary due to the long-standing symbolism behind...
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How to Test for Diffusion Treated Gems
Learn how to spot diffusion treated gems with a simple immersion test. This common treatment for sapphire can significantly reduce...
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