James Allen - Professional Jeweler James Allen - Professional Jeweler
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Diamonds & Engagement

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Customer Service Hours:
Mon-Thur 9am to 12am
Friday 9am to 6pm
Sat - Sun 10am to 6pm
Questions? Contact us:
James Allen Phone 877-826-9866
outside USA? call:
+1-301-631-1414
service@jamesallen.com

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Home > Diamond Education

Diamond Education

Learn about the attributes of diamonds by clicking any of the Diamond Education categories on this page. Learn the 4 C's of diamonds: Cut, Color, Clarity and Carat Weight. Click the Certificate link to learn all about A.G.S - American Gem Society or the G.I.A - Gemological Institute America.

Diamond Cut

Diamond DrawA diamond’s cut is not only about its shape, but how effectively the stone can return light back to the
viewer's eye.  A well-cut diamond will appear very brilliant and fiery; while more poorly cut stones can appear dark and lifeless, regardless of color or clarity. read more
 

Diamond Color

Diamond Color DrawWhen shopping for a diamond, it is generally preferred to have the least amount of color possible.  Diamond color is divided into five broad categories. Read More


Diamond Clarity

Diamond Clarity Draw
Clarity refers to the presence (or absence) of impurities, blemishes or other identifying characteristics within a diamond.  Clarity characteristics are what make every diamond completely unique. There are no two diamonds that will have exactly the same inclusions in the same location.  Read More
 

Carat Weight

Carat Weight DrawCarat is a term that refers to the weight of a diamond.  Before the twentieth century, diamonds were
 
measured by using the carob seed that is small and uniform and served as a perfect counter weight to the diamond.  It is those original carob seeds which are the origin of the word carat we use today.  Read More


Diamond Certification

Certificate IconA certificate is a blue print of a loose diamond. 
 
Wholesalers, retailers, and consumers alike know a certificate as either a diamond grading report or diamond dossier. A certificate will tell a diamond’s exact measurements, weight, cut and overall quality. Read More
 

Precious Metals

Ring DrawNothing shines like yellow gold, white gold, or platinum.  Over time, precious metals have come
to symbolize wealth, power, and strength.  Their beauty and physical qualities make precious metals a prized part of any jewelry collection.
Read More


Pearl Study

Pearl Studs DrawA pearl is a valued gemstone that is naturally created by a marine-based organism called a mollusk that is otherwise known as an oyster.   

Read More
  


James Allen Screen Saver
Cushion Cut Diamond screen saver (5MB). Download now
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Diamonds & Engagement

Diamonds
Engagement Rings
Wedding & Anniversary
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Hand 3D View Gallery
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Design Your Own

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Customer Service Address: 605 North Bentz #203 Frederick, MD 21701
Corporate Address: Manhattan, New York, NY

We welcome visitors to our New York office. Office visits are by appointment only. Please contact our Customer Service center to schedule an appointment.
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