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Complimentary Engraving

Add a free laser engraved message (up to 20 characters) to any watch over $300. Just add your watch to the cart, click on "Engrave" to add your personal message and then add code ENGRAVE during checkout.

Complimentary engraving cannot be used on sale items or private offers and cannot be combined with any other promo code.

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Glossary « Back to Education

  • DIAMONDS

    DIAMONDS

        
  • WATCHES

    WATCHES

        
  • JEWELRY

    Jewelry

        
  • PEARLS

    PEARLS

        
  • RUBIES

    RUBIES

        
  • SAPPHIRES

    SAPPHIRES

        
  • BOOKS

    BOOKS

  • GLOSSARY

    GLOSSARY

    A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
    Letter F

    Facet

    A polished surface on a diamond.

    Fire

    Fire is the amount of colored light reflected from within a diamond. White light entering a stone is separated into the many colors of the rainbow just like a prism. Good fire can only be achieved with very good to excellent proportions. Also called "refraction" or most often "dispersion" in the trade.

    Fluorescence

    A glow which emanates from certain diamonds when exposed to ultraviolet light. Strong fluorescence should be avoided, but faint fluorescence usually does not affect the appearance of a diamond. In fact, faint or moderate blue flourescence is preferred by some customers because it can make a less expensive yellowish color appear more white or colorless in daylight.

    Fractures

    Fractures are caused mainly by mechanical stresses like pressure or impact and may run in all directions within the diamond.

    In Association with Amazon.com

    Buy Books about Diamonds and Gems

    Gemnation has partnered with Amazon.com to bring you
    the most relevant diamond, gem and ring buying books and guides.

Glossary

Letter F

Facet

A polished surface on a diamond.

Fire

Fire is the amount of colored light reflected from within a diamond. White light entering a stone is separated into the many colors of the rainbow just like a prism. Good fire can only be achieved with very good to excellent proportions. Also called "refraction" or most often "dispersion" in the trade.

Fluorescence

A glow which emanates from certain diamonds when exposed to ultraviolet light. Strong fluorescence should be avoided, but faint fluorescence usually does not affect the appearance of a diamond. In fact, faint or moderate blue flourescence is preferred by some customers because it can make a less expensive yellowish color appear more white or colorless in daylight.

Fractures

Fractures are caused mainly by mechanical stresses like pressure or impact and may run in all directions within the diamond.

In Association with Amazon.com

Buy Books about Diamonds and Gems

Gemnation has partnered with Amazon.com to bring you
the most relevant diamond, gem and ring buying books and guides.
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