FREE U.S. Shipping  •  30 Day Returns
FREE U.S. Shipping  •  Complimentary Engraving  See Details
Live Chat Software chatLive Chat    emailEmail   phone866-323-8463
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.

X
Gemnation
accountSign In  |  watch listList  |  shopping cartCart
Live Chat Support Software

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 M

    Measurements

    The dimensions of a stone presented as either a range of values or a precise value. Measurements are shown in milimeters unless otherwise indicated.

    Mechanical Watch

    A watch movement that uses gears and levers driven by a hand-wound spring.

    Movement

    The assembly that comprises the main timekeeping mechanism of a wristwatch. The size, thickness and complexity of the movement, together with the number of jewels used as durable bearings, determine the movement's cost. Smaller and thinner movements tend to be more expensive than less compact movements.

    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 M

Measurements

The dimensions of a stone presented as either a range of values or a precise value. Measurements are shown in milimeters unless otherwise indicated.

Mechanical Watch

A watch movement that uses gears and levers driven by a hand-wound spring.

Movement

The assembly that comprises the main timekeeping mechanism of a wristwatch. The size, thickness and complexity of the movement, together with the number of jewels used as durable bearings, determine the movement's cost. Smaller and thinner movements tend to be more expensive than less compact movements.

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.
Email Us Live Chat Call 866-323-8463 Call 718-663-3970