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Gemstone

en.wikipedia.org/wiki/Gemstone

A gemstone or gem is a piece of mineral crystal, which, in cut and polished form, is used to .... Each laboratory has its own methodology to evaluate gemstones. ... Even the same gemstone can occur ...

How to Buy Sapphire: 15 Steps (with Pictures) - wikiHow

www.wikihow.com/Buy-Sapphire

When buying sapphire, you should know how to evaluate the quality of the stone to ... The most prized color is royal blue, which is in the middle of the scale.

How to Evaluate the Quality of Sapphire Gemstones - Jewelry Notes

www.jewelrynotes.com/sapphire-gemstone-shopping-quality/

The sapphire should be reasonably clean when viewed with the naked eye. Too many inclusions will make the stone less clear and also detract from its color.

How to grade and value a gemstone - Wild Fish Gems

www.wildfishgems.com/grading

How to evaluate colored gemstones: ... the padparadscha, the rhodolite or cornflower blue sapphire which are characterized by the combination of hue and tint.

Colored Gem Evaluation - Emporia State University

academic.emporia.edu/abersusa/go340/evaluate.htm

Diamond, ruby, sapphire, emerald, and topaz are all central to a jeweler's ... Unfortunately, there is a paradox with evaluating colored stones in that often times ...

Sapphire Education - The Natural Sapphire Company

www.thenaturalsapphirecompany.com/t-education_sapphires/

Colors. Sapphires come in all ranges of colors from blue to black to colorless and all .... The second consideration in evaluating a blue sapphire is sheer beauty.

Sapphire Ring Buying Guide - How to Evaluate, Identify and select ...

www.sndgems.com/Sapphire-Ring-Buying-Guide-How-to-Evaluate-Identify-and-Select-Certified-Sapphires-and-Fine-Sapphire-Jewelry-Online.htm

The most important thing when selecting a colored gemstones is to choose a .... Our guides shows you step-by-step how to evaluate sapphire and settings in ...

Faceting Rough - How to evaluate and select it

facetingacademy.com/learn-faceting/learn-faceting-free/rough-class/

Too Dark; Bad Dichroism, or a Closed C-axis; Bad Color Modifiers ... In stones that have directional color (Sunstone, Iolite, Sapphire, ...

Blue Sapphire Gemstone | Learning Library | GemCollector

www.gemcollector.com/en-us/learning-library/gemstone/blue sapphire gemstone/

The most attractive Sapphires are those that are a pure blue. ... The key evaluation criteria for Sapphire, as with all coloured gems, remain the vividness of its ...

Sapphire Buying Guide - International Gem Society

www.gemsociety.org/article/sapphire-buying-guide/

Mention sapphire and most people will probably imagine blue colored gems. ... on a sapphire buying adventure, learn how to evaluate a sapphire's quality and ...

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Ruby & Sapphire | Judging Quality & Prices

www.ruby-sapphire.com

The dispersion of corundum is so low (0.028) and the masking effect of the rich body color so high, that it is generally not a factor in ruby and sapphire evaluation  ...

Passion Fruit: A Lover's Guide to Sapphire — Palagems

www.palagems.com

This is the color – an intense azure hue matched in the world of gems only by the finest ... This is, of course, apropos in the evaluation of any gem, but of utmost ...

How to Evaluate Sapphires | eHow

www.ehow.com

How to Evaluate Sapphires. Sapphires come in a wide range of beautiful colors. Most people think of this lovely gemstone as being a deep blue color, but ...