Diamond Eternity Rings

diamond eternity ringsA diamond eternity ring features diamonds of the same shape and size in a continuous circle around the band offering an unsurpassed amount of brilliance, fire, and sparkle from every angle.

Eternity bands are simplistic and elegant.  They can be worn alone or are a great compliment to an engagement ring.  Diamond eternity rings can be purchased as an original wedding band or an anniversary band.   Diamond eternity rings make a great gift for that special milestone anniversary.  The traditional eternity ring contains all diamonds, but some contain diamonds with alternating gemstones or just gemstones.

Diamond Eternity Ring Designs

The most popular eternity ring design is the open basket shared prong design.  In an open basket design the diamonds are set at the same height allowing light to enter and flow through all the stones evenly.  The shared prongs allow the diamonds to be set using the least amount of metal possible, so all you see is the brilliance and fire of the stones.

Another popular eternity ring design is a channel set.  This setting allows for the diamonds to be set within the band providing a smooth surface.  Since light enters and exists through the table of the diamond this setting offers brilliance and fire with a more tailored look.

What diamond shapes are used and why?

The most popular diamond shape used for eternity rings is the round brilliant followed closely by the princess cut and radiant cut.  These shapes are known for their brilliance and fire and can be set very close together making them the perfect shape for any style eternity ring.    Over the past several years, asscher and emerald cuts have gained popularity and provide a very classic elegant look.

What diamond color and clarity is recommended and why?

For diamond eternity rings we recommend colorless or near colorless diamonds with a clarity rating of SI1 or better for round brilliant cut, princess cut, and radiant cut diamonds.  For asscher cut and emerald cut eternity rings we recommend colorless diamonds with a clarity rating of VS2 or better.

At Since 1910 we take pride in offering something unique in the way of eternity rings….our custom eternity rings builder. Our custom eternity ring builder offers you the opportunity to build your own eternity ring custom made to your exact finger size in three easy steps; choose your diamond shape, choose your finger size, and choose your diamond color and clarity.   This is a great benefit to you because you only pay for the exact number of diamonds used.  When purchasing a pre-made eternity ring often times it will need to be sized down, but you will still be paying the original price regardless.


Buyers Guide: How To Purchase Diamonds

Buying a diamond should be a great experience and one that is not confusing or overwhelming.  Like any other large purchase you make, education and knowledge is key.  Before purchasing your diamond make sure you have at least a basic understanding of the 4Cs, diamond shapes, diamond terminology, and what to look for on a diamond grading report.  This will prepare you to ask the right questions and will give you the confidence that the decision you make is the right one for you.

The 4Cs of Diamonds: Cut, Clarity, Carat Weight, Color

Diamond Cut

Of the 4Cs, Gemologists believe that cut has the greatest influence on a diamond’s beauty.  Cut is the factor that determines the diamond’s fire, sparkle, and brilliance.   Diamonds have a unique ability to effectively manipulate light.  This unique quality can only be realized with an extremely high level of accuracy during the cutting and polishing process.  Where nature dictates the uniqueness of color and clarity, humans affect the cut.  While cutting diamond rough, cutters must not only consider the proportions of a diamond, but also the craftsmanship of overall symmetry and polish as well.

A diamond’s brilliance comes from light entering the crown and reflecting from one facet to another and returning back out the crown.  A diamond that is cut too shallow or too deep will not reflect light properly and the diamond will not be as brilliant as a diamond with an excellent cut.

Diamond Clarity

Clarity refers to the absence of clarity characteristics in the diamond. The GIA clarity scale consists of 11 grades ranging from flawless to included.  When determining a diamond’s clarity grade, GIA considers the size, nature, color, position, and quantity of clarity characteristics under 10x magnification.  The lesser the number of inclusions or blemishes a diamond has the higher clarity grade it will receive.  A diamond with no inclusions using 10x magnification will be considered flawless and is very rare and more costly.


An inclusion is a clarity characteristic either totally enclosed in a polished diamond, reaching or extending into it from the surface, or one that is caused by treatments or the cutting process.  Note – Inclusions caused by treatments or the cutting process may not always be documented on the diamond certificate.


A blemish or external clarity characteristic is on the surface of the diamond only and can be caused by wear, the cutting process, or may be a result of the diamond’s crystal structure.   Blemishes play a lesser role than inclusions do when determining the clarity grade, but may affect the polish grade.

GIA Clarity Grades

FLFlawless – no blemishes or inclusions under 10x magnification.

IFInternally flawless – no inclusions and only very minor surface blemishes.

VVS1 and VVS2 Very, very slightly included – very, very small microscopic inclusions extremely difficult to see under 10x magnification.

VS1Very slightly included – very small microscopic inclusions difficult to see under 10x magnification.

VS2Very slightly included – very small inclusions somewhat easy to see under 10x magnification.  These diamonds represent a good value to someone looking for a high quality diamond, as the very small imperfections do not affect the beauty of the diamond.

SI1Slightly included – small inclusions that are easy to see under 10x magnification. This clarity is an excellent choice for someone looking to stay within a budget, but wants a diamond that will look as good as a higher clarity diamond except when viewed under magnification.

SI2 – Slightly included – small inclusions that are visible under 10x magnification. Depending on their location within the diamond, they may sometimes be visible to the unaided eye without magnification.  SI2 diamonds are attractively priced and typically no visible difference can be seen without magnification.  If you are interested in an SI2 diamond and would like us to personally verify if it is eye-clean, please give us a call at 1-800-979-1910.

I1* and I2Included – imperfect with inclusions that are obvious to the unaided eye and may affect the diamond’s durability.

I3*Included – imperfect with inclusions that are extremely obvious to the unaided eye and pose a definite threat to the diamond’s durability.

*At Since1910.com, we do not sell I1, I2, and I3 clarity diamonds.

Diamond Carat Weight

Carat weight refers to the size of the diamond.  Carat is the standard term used for the weight of a diamond and received its name from the seed of a carob tree.  The carob seeds were used by early diamond traders on scales as units of weight for small amounts of diamonds because of their consistent size.  The weight of the carob seed was 200 milligrams and the weight of a carat is exactly 200 milligrams or as it is know today, 0.2 grams

Many believe that the term carat represents the size of the diamond however; carat represents the weight of a diamond.  One carat is divided into 100 points.  So, for example, a quarter carat or 25 point diamond weights .25 carats (cts).   Diamonds weighing over one carat are expressed as carats and decimals.   They are measured to the hundred thousandths of a carat and rounded to a hundredth of a carat.   For example, a 1.25 stone would be described as one point twenty five carats.

The cost of a diamond is not measured in weight alone.   Several diamonds of the same weight can be priced considerable different.  When calculating the cost of any diamond, clarity, cut, and color are major factors as well.

Diamond Color

Color refers to the absence of color in the diamond.  Diamonds composed of pure carbon are colorless and extremely rare and costly.  Most diamonds contain nitrogen, boron, or hydrogen all of which impact color.  A majority of white diamonds sold on the market today contain traces of nitrogen, which causes slight shades of yellow or brown.  Small, subtle differences in color can make a substantial difference in a diamond’s value.

In a effort to eliminate confusion related to diamond color, the Gemological Institute of America (GIA) implemented the color grading system in the 1950s which is still being used industry wide today.   Diamonds are graded on a scale beginning with the letter D (colorless) and ending with Z (light yellow or brown).   When creating the new color scale GIA chose to start with the letter D as a means of starting over.  Prior to GIA implementing the D-Z scale, other systems all of which were inconsistent and inaccurate, already used the letters A-C, numbers 0-3, and the Roman numerals I-III.  It is important to note that diamonds at the end of the color range with a noticeable yellow tinge are not considered fancy yellow color diamonds.

Factors to Consider When Choosing a Diamond Color

  • When a diamond is well cut the diamond’s refraction and dispersion will often disguise certain degrees of color and may make a darker diamond appear whiter when viewed with the unaided eye (without magnification).
  • The size of the diamond will also affect the appearance of its color.  Color can easily be seen in larger diamonds as opposed to smaller diamonds.  Often times it is difficult to see color in diamonds under a 1/2 carat with the unaided eye.
  • The shape of the diamond will affect its color as well particularly step cut diamonds such as the Asscher and Emerald that have large open facets and do not display the brilliance of other cuts.  The center of these diamonds display a “window effect” where some of the color in the diamond can appear washed out and make it appear whiter then its actual color grade.  The shallower the cut of the diamond the more apparent this will be.

Diamond Shapes

Diamond shape is the basic outline of the diamond.   Here are some popular shapes sold today.

Round Brilliant is the most popular.  It consists of 56 to 58 facets and displays the most brilliance, fire, and scintillation of all diamond cuts on the market today.

Asscher is a stepped square cut also known as the modified square emerald cut.  It consists of 72 facets and resembles the shape of an octagon.

Cushion is not as brilliant as many of the more modern cuts, but has a classic romantic look that definitely stands out in a crowd.

Emerald is a cut that provides a very elegant classy look and is known for its long lines.  The pavilion is cut with large rectangular facets to create an open effect or optical appearance.

Heart is known as the most romantic of all shaped diamonds.  The heart consists of 59 facets and is essentially a pear cut with a cleft at the top.

Marquise resembles the shape of a football when viewed from above.  The marquise is bright, clear, and has a great deal of sparkle.

Oval is an adaptation of the round brilliant and usually looks larger than the round brilliant of the same carat weight.

Pear is half oval and half marquise.  The pear has 58 facets and displays the brilliance, fire, and sparkle of the round brilliant.

Princess is square shaped with uncut pointed corners.  The princess has 58 facets and is known for its brilliance, fire, and sparkle.

Radiant has 70 facets and has the brilliance and fire of the round brilliant.  The radiant is square/rectangle in shape with cropped corners.

Diamond Certificates

A diamond certificate (aka – diamond plot, diamond grading report) is a document certifying a diamond is genuine and is created by a group of gemologists after the diamond is carefully evaluated.  The report contains information such as carat weight, color, clarity, proportions, and a cut grade for round diamonds.   The certificate also contains a “blueprint” of the diamond’s clarity characteristics.

To understand all aspects of the diamond grading report, click on the GIA link below:


To understand all aspects of the diamond anatomy, click on the GIA link below:



What is a Fancy Cut Diamond?

A fancy cut diamond is any diamond shape other than a round brilliant.  The most popular fancy cut diamonds sold today are asscher cut, cushion cut, emerald cut, heart shaped, marquise shaped, oval shaped, pear shaped, princess cut, and radiant cut, but there are many others.

The face up shape of a fancy cut diamond is usually the first thing people notice and the main reason why they are purchased.  Fancy cut diamonds provide a way for you to express your individuality and appeal to those looking for that less traditional look.  Fancy cut diamonds are also a great choice as side stones for a three stone engagement ring or accent stones on a solitaire setting.

Each fancy cut diamond has its own characteristics, so you should take the time to familiarize yourself with each.  Most fancy cut diamonds on the market today are cut using the brilliant cut facet arrangement allowing for the same brilliance, fire, and scintillation of that of the round brilliant cut diamond, but some are cut using step cuts or mixed cuts.  The round brilliant cut features triangular and kite shaped facets that begin at the diamond’s center and go out to the girdle.   A step cut has long, narrow, four sided facets arranged in rows parallel to the girdle on both the crown and pavilion.  Mixed cuts are a mix of both the round brilliant and step cuts.  They can either have brilliant cuts on the crown and step cuts on the pavilion or step cuts on the crown and brilliant cuts on the pavilion.

fancy cut diamond

Some Diamond Terms for Fancy Cuts

Belly – the center area of the side of a heart, marquise, oval, or pear where it curves out slightly.

Head – the rounded end of a pear

Shoulders – the curved edges between the head and belly of a pear

Lobes – the rounded part of a heart

Cleft – the v-shaped part of a heart

Symmetry and length-to-width ratio are important factors to consider when purchasing fancy cuts.  You always want a fancy cut that is symmetrical.  For example, both lobes of a heart should be the same size, both ends of an emerald should be the same width.  Length-to-width ratio determines the shape of a fancy cut.  There are preferred ranges for each shape, but this is also a personal preference.

To learn more about the characteristics of each fancy cut diamond visit our diamond education section.

How to Choose the Perfect Diamond Shape for Your Engagement Ring

Choosing the perfect diamond shape for your engagement ring is important and before making your decision you should consider much more than what shape you like best.  Your engagement ring will be one of the more significant purchases you’ll ever make and considering all your options is essential.

What diamond shapes are there?

diamond shape chart

Before making your decision familiarize yourself with each shape and the differences between them.  Do you like the fire and brilliance of the round brilliant cut, radiant cut or princess cut, the romantic look of the cushion cut, heart, or oval cut, or the classic long lines of the emerald cut.

While personal preference is extremely important here are some other things to consider.

Things to consider

Will the shape be practical to your life style?  Based on your life style certain settings may be better than others.  For example, if you work in the medical profession a diamond shape that can be set in a low profile setting may work better for you.

Size of your fingers and hand –certain shapes will enhance certain features.  For example, the oval elongates your fingers.   Also, a 1.00ct round brilliant will look much different than a 1.00ct emerald.

The quality of the diamond – we always recommend quality over weight.  Certain shapes will need to be purchased in a higher cut, clarity, and color grade than others.  For example, the clarity characteristics in a round brilliant will be less visible than in an asscher or emerald.

After choosing the perfect diamond shape for you make sure you take a look at several setting options.  You’ll want to find a setting that shows off your center stone and doesn’t hide it.

To learn more about diamond shapes, visit our diamond education section

What is an Emerald Cut Diamond?

The Emerald cut diamond received its name when a diamond cutter chose to cut diamond rough in the shape of an Emerald using the same method as they would for cutting an Emerald shaped gemstone.  Emerald shapes are cut with “stepped” facets, which means the facets resemble steps on a staircase.

emerald cut diamondThe Emerald cut provides for a very elegant classic look and is known for its long lines.  The pavilion (bottom portion of the stone) is cut with large rectangular facets to create an open effect or optical appearance.

Since Emerald cut diamonds are designed with larger facets, you need to be sure that you are familiar with the qualities of a good cut.  Like the Asscher cut you always want to choose cut, color, and clarity over weight.  An Emerald diamond makes a beautiful engagement ring as a solitaire or set with other stones.

To learn more about Emerald cut diamonds visit our diamond education section