Diamond Shapes

Available Diamond Shapes

If you thought all diamond shapes were the same, you may be surprised at the abundant number of diamond shapes that are available. Most jewelers offer at least nine of the most common gemstone shapes, including:

Diamond Shapes

Two diamonds that are the same shape will appear to look slightly different depending on the siz and weight of the diamond, as well as the type of setting that the stone is placed in. The same ring worn on two different hands can also look quite different, based on the size of the hands.

Difference Between Diamond Shapes and Diamond Cut

Many people mistakenly use the terms “diamond shapes” and “diamond cuts” interchangeably, but there is a difference between them. The cut of a diamond refers to how the artisan maximizes the features of the gemstone by creating angles and details, making the light go into the diamond and bounce back in the most brilliant way possible. The quality of a diamond's cut contributes greatly to the overall value of the gemstone, where as the shape of a diamond does not increase or decrease a diamond's value. When discussing diamond shapes, you are referring to the actual geometric shape of the diamond, whether it is round or oval, emerald or heart shaped, for example.

Choosing Diamond Shapes

With all the possibilities of diamond shapes, how do you go about choosing one? If you are buying yourself a diamond, it's just a matter of looking at all the different varieties and finding one that is most pleasing to your eyes, and the ones that look best when you put them on your finger, or wear in your necklace.

When choosing a diamond shape for someone else, it becomes a bit more difficult. For an engagement ring, many women prefer the traditional round shaped diamond, while others may enjoy having something more unique. A young woman or one who is considered a hopeless romantic may prefer to have a heart shaped diamond.

Other considerations for selecting diamond shapes for rings should be based on the size of a woman's hand. If she has long, slender fingers, can elegantly wear a pear shaped diamond, marquis, or oval shape. Place the same shaped diamond rings on a woman with shorter, wider fingers, and it will cover up too much of the finger and look bulky, and perhaps even awkward. Small hands typically look best with round shaped or princess shaped diamonds.

Most Popular Diamond Shape for Engagement Rings

Even though there is a wide variety of diamond shapes available, the most commonly purchased diamond shape for engagement rings is the round diamond. Round diamonds are considered the “classic engagement ring”, and the stones are often set in yellow gold or platinum. In fact, any diamond shape other than round is considered to be a “fancy” shape, since the round diamond is so popular.

Diamond Cut

Our love of diamonds and admiration of their fire and brilliance has given rise to many different cuts of diamonds. While we still see some of the earliest styles of diamond cuts – such as the round and emerald-cut, there are many more cuts today, some of them patented by their designers and costing hundreds of thousands of dollars.

The most popular cut for a diamond ring today is still the round, brilliant cut. It was developed in the 17th century in Venice. It is still preferred when the raw crystal is in an octahedron formation. Even though as much as 50% of the stone is cut away in the process, often two stones can be carved from an octahedron. More unusually-shaped stones are used for fancy cuts, such as a marquise, pear or heart shaped diamond. The earliest brilliants had 17 facets on the top of the stone and were called double-cut. This was soon improved with stones cut with 33 facets and were called triple-cut brilliants.

Brilliant Round Cut

In the 19th century, with the development of better gem-cutting tools, more innovations in diamond cutting styles were developed. In 1919, Marcel Tolkowsky combined the art of cutting with the science of light and refraction and published his book, Diamond Design. These relatively recent geometric calculations were the forerunner of much of diamond cutting work today and led to other, more precise mathematical models engineered to enhance the fire and brilliance of diamonds.

There are now cuts such as the princess cut, trillions, ovals, pear and heart-shaped. Some innovative cutters have even fashioned star or butterfly-shaped diamonds! One patented cut, the Ashoka diamond, is an oblong cut with rounded, brilliant ends, and requires a stone 3 carats or larger. It’s an exceptionally beautiful (and pricey!) diamond shape. Tiffany has also patented a cut of diamond called the Lucida cut. It’s the lucky bride whose fiancé gives her one of these highly coveted stones!

Colored Diamonds

Fancy colored diamonds are all the rage these days. Gemologists have developed new ways to create versions that are affordable for the average person - by treating less desirable diamonds. These less desirable diamonds are treated with irradiation followed by intense heat. This turns brown and yellowish diamonds into beautifully colored diamonds that you can afford. This produces stunning greens, blues, yellows, reds, purples and other colors. These colors are considered permanent, but there is a possibility they could change during repairs if a high heat is used.

Treatments like irradiation make it possible for more people to own these vividly colored diamonds. Most natural colored diamonds are rare and also extremely expensive. When shopping for colored diamonds you need to assume that any affordable fancy color diamond has been treated. Ask about the stones origin and request to view a lab certificate to verify authenticity.

Synthetic colored diamonds are another option if owning a colored diamond is something you desire but cannot quite afford. They are real diamonds, but they are created in a lab.

Natural fancy color diamonds get their coloring from different trace elements present in the stones, such as nitrogen, which produces a yellow diamond. Diamonds can be colored by exposure to radiation during its creation. An example of a diamond affected by radiation is a Green diamond. 


Another way that a natural colored diamond gets color is by its inclusions. Regarded as flaws and undesirable in a colorless diamond, inclusions give unique tones and brilliant flashes of color in a fancy color diamond. Remember that Natural fancy colored diamonds are very expensive, any colored diamond labeled to be sold as natural should be accompanied by a certificate from a respected grading lab. 


A "fancy" diamond is a natural diamond that has color. These colors vary from red, green, purple, violet, orange, blue and pink – and most shades between. Fancy color shades vary from faint to intense.

The most famous diamonds in the world are Color diamonds. The Tiffany Diamond, which is yellow and the Hope Diamond which is blue are colored diamonds. Color diamonds have an amazing financial track record. The value has never decreased on wholesale level in more than 30 years. Blue and pink diamonds have doubled every 5 years of a strong economy. In the 1970’s  you could have bought a very high quality blue diamond for about 50K and today the very same stone would be worth between 2 and 3 million.

Diamonds Durability

Diamonds are among the hardest substances on earth, in fact they use diamonds and diamond dust to cut diamonds. Other gemstones are hard as well, but not nearly as hard as a diamond. Diamonds and other gemstones are measured by the Mohs scale. It runs from 10 (hardest) down to 1 (softest). It is some what arbitrary and not linear. The range from 9 to 10 is much greater than 8 to 9.Harder minerals of course tend to be more durable and will not scratch easily. They’re good choices for jewelry because of their ability to withstand changes in elements or the arbitrary scratch or knock. Talc, with a Mohs hardness of 1, is the softest mineral and can be scratched with a fingernail.

Image via WikipediaQuartz is the most common gem mineral (citrine and amethyst) and ranges at 7 and above. Rubies and sapphires are nearly as hard as diamonds, with a scale of 9 on the Moh’s scale. People mistakenly think diamonds are indestructible and this is not true! Pliny the Elder in his Natural History stated that “these stones are tested upon the anvil, and will resist the blow to such an extent as to make the iron rebound and the very anvil split asunder.” If you tried that, however, you would more likely shatter the diamond, rather than the anvil! Many diamonds are cut to prevent accidental nicks, scratches and breaks. Except for the Princess cut, which is a square-cut diamond with pronounced corners, most corners on angular diamonds are rounded. A protruding point of a square or rectangular diamond could inadvertently be knocked against a surface and chip or scratch.

Your diamond should be protected in a soft, velvet-lined case if you’re not wearing it. Have the setting checked periodically and have the stone examined by a professional. Your diamond is not only an investment in money, but an investment in yourself or your relationship and is worth the small amount of extra care it takes to preserve it forever!

Diamond Clarity

Image via Wikipedia

What is Diamond Clarity?

Diamond clarity is the measure of flaws found in and on the outside of a diamond. The less flawed a diamond is, the more value it has and the higher the price tag. There are very few diamonds which can be categorized as having no flaws at all, however, most diamond flaws cannot be seen without magnification of at least 10 times. Because issues with diamond clarity are often undetected when looking at a diamond, some people consider this to be one of the least of their concerns when selecting a diamond to purchase.

How is Diamond Clarity Determined?

The most well known measurement of diamond clarity is done by the Gemological Institute of America (GIA). It ranks diamonds based on a grading system it created that ranges from flawless diamonds, to imperfect diamonds, with many different grade ranges in between. The better the clarity ranking, the more expensive a diamond will sell for as it has more value.

Types of Inclusions that Effect Diamond Clarity

Inclusions are flaws that effect diamond clarity. They make it so that the diamond is not “perfect”, and there are visual imperfections within the gemstone. Most flaws however, are un-noticeable to the naked eye and can only be seen under high levels of magnification.

There are names for many of the most common inclusions. Carbons effect diamond clarity because they are very small black dots found on the surface of a diamond, which may or may not be visible in regular lighting. Some may be so small that you need magnification to view them. Pinpoints effect diamond clarity because they are white dots along the surface of a diamond. Pinpoints are the most common of all diamond flaws. Clouds effect diamond clarity because they cause what look to be cloudy areas within the gemstone. The clouds are actually made up of many growths of crystals that are positioned very close together within the diamond, and their proximity to one another is what causes the cloudiness to appear. Feathers effect diamond clarity by causing cracks to form within the diamond, that look similar to that of broken glass.

Clarity Enhancements

Diamond clarity flaws can often be fixed or reduced by using a variety of clarity enhancement treatments. Some diamonds are painted, some get lasered in order to remove pinpoints and carbons, and some diamonds undergo a process by which tiny holes are drilled into the diamond in order to reach areas of inclusions within the gemstone, and then the cracks are later filled with molten glass. Having enhancements done to improve diamond clarity decreases the overall value of the diamond, but can improve it's appearance. Diamond certificates should indicate that enhancements were done on the diamond, so ask to see documentation before making a purchase. While most enhancements just cause the diamond to look nicer, some may actually cause the diamond to be weaker, and more prone to breakage than a diamond that has not had any treatments.

Diamond Carat

What is Diamond Carat Weight?

When shopping for a diamond, you've no doubt heard references to the 4 C's of diamonds. Diamond carat is one of those popular ”c's” to consider when evaluating a diamond, and it's a term used to describe how much the diamond weighs. A single diamond carat is equal to the weight of 200 milligrams, or .2 grams.

Diamonds are described two different ways in regards to the diamond carat. An abbreviation of “ct” is used to describe the weight of a single diamond stone while an abbreviation of “ct TW” is used when describing the total weight of an entire piece of jewelry- when it has more than one stone in place.

It's important to recognize that two stones may have the exact same carats, meaning they have the same weight measurement, and yet they are completely different in size and appearance. This is due to the actual density of the gemstone. The more dense a stone is, the more weight they have, and sometimes a smaller stone will actually weigh more than a larger stone because of density.

The Value of the Diamond is Effected by it's Weight

When selecting your diamond ring, you can choose between a single, solitaire style setting (a single diamond on the ring) and a setting that has multiple, smaller stones to make up the ring. The value of a solitaire one diamond carat will actually be more than if you buy a ring that has two diamonds that add up to one carat or greater. Larger sized diamonds are more rarely found when mining diamonds, making them more valuable and expensive than purchasing the same amount of diamond carats in smaller stones.

Selecting Diamond Carat

So how do you determine what size diamond to buy? Do you want a diamond carat of 1, or 2, or do you want a ring with multiple, smaller stones? The answer to this will depend greatly on your budget, as well as the person who will be wearing the ring.

A diamond will look larger on a slender finger, so keep that in mind if the recipient of the ring has thin hands. The actual diamond carat measurement is probably not as much of a concern as the appearance, shape, and setting of the ring. Particularly because a 1 carat diamond ring will not look half the size of a 2 diamond carat ring, it's far more important to select a ring that is pleasing to look at than it is to buy one with the most carats you can afford.

Determine how much money you have to spend, and then decide on the cut of the diamond. Once you have these two pieces of information narrowed down, you can start browsing the diamonds in your price range, in the style you want, and find out what diamond carat you are in the market to buy.

Diamond Certificates

Diamond certificates from independent organizations such as the Gemological Institute of America (GIA) provide a diamond grading report, that gives you valuable information about the 4 C's that were taken into consideration when the diamond was priced. It's important that you use an outside source for diamond certificates, instead of the jeweler who is selling the diamond you are interested in, because the jeweler wants to make money on the sale of the diamonds, the certificates may be slightly biased and you could be paying more than the market value of the diamond.

Reasons to have Diamond Certificates

When you go to a jewelry store, or consider making a purchase from an online retailer, the jewelry that has diamond certificates tends to sell for several hundred dollars more than diamonds that are graded the same that are without certificates. This is because the jeweler recognizes that they typically grade their diamonds one level better than an independent grading organization, like the Gemological Institute of America. The GIA is more conservative when grading diamonds because they do not gain anything from diamond sales.

Pay the Right Price for your Diamond

Diamonds are valued according to their quality based on a grading system that makes use of the 4 C's. You should receive diamond certificates (also called grading reports) from independent companies rather than a jeweler, to insure that your getting an unbiased reporting of the value of the diamond. Otherwise, you could be paying much more for your diamond than what the diamond is actually worth.

Protecting Your Investment

Diamonds are not the same kind of investment as buying stocks and bonds, but having diamond certificates gives you a better investment than just having the diamond. Diamond certificates make it easier to sell a diamond in the future, because you have documentation of how much the diamond is worth and why it was valued that amount. In fact, if you attempt to sell diamonds without having diamond certificates, most dealers will not buy from you and you would end up having a certificate drawn up anyway, so you may as well have a certificate grading report created at the time of purchase, for your current protection as well as future possibilities for selling.

Increased Security during Cleanings and Repairs

Many people hesitate to bring their jewelry into the jeweler's when they're in need of repair services or cleaning. It makes people wonder how they'll know for sure that they've received the same diamond back that they brought in. It is an extremely rare occurrence for a jeweler to purposely switch diamonds, however it could happen unintentionally. Diamond certificates act as an additional security measure in this case. They are like fingerprints stored in police databases, they contain all the data needed to match the person to the fingerprints, and diamond certificates have enough information on the diamond to match the diamond with the certificate and the owner.

Diamond Cost

How Diamond Cost is Determined

If you are in the market to purchase a diamond, you'll be learning all about the 4 C's of diamonds; cut, color, clarity and carat. But in the mind of the average buyer, there is a fifth “c” that just may be the most important of all them: the diamond cost.

The actual price of a diamond is determined by a grading system that takes into account the cut of the diamond, the color, the clarity and the number of carats. There is a non profit organization called the Gemological Institute of America (GIA) that has devised the official grading system of diamonds, and because of that system, a diamond that is of more carats may cost less than a smaller diamond if the larger diamond has inferior cut, clarity or color ratings. Cost is also determined by the retailer.

Buying Diamonds Online

The internet provides a wealth of information on diamonds, educating buyers on the value of diamonds based on size, shape and clarity and luckily, diamond cost is regulated by industry guidelines. This means you can shop for your diamond gem stones online with as much confidence as you would shopping for jewelry at your local retailer, especially if you take the time to become knowledgeable about diamond cost before beginning your search for the perfect stone.

Guide to Diamond Cost

Every jeweler sets their own prices on their gem stones, rings, necklaces and other items. When dealing with diamond cost, it also depends on the shape of the diamond. A ”round brilliant” shape will tend to cost more than an ”emerald” shape even when they are the same quality and the same size.

If you have a minimal budget, such as $500 or less, you can expect to find a diamond with a carat weight between .15 and .25, set in a 10-14k gold. If you're in the market for a diamond cost of $500 to $750, you can expect to be able to purchase one between .20 and .37 carats. If you are looking for a 1 carat diamond, you should expect your diamond cost to range between $2000 and $3500.

Get the Most Diamond for Your Money

When you are researching diamond cost, there are many more factors to consider than just the size of the diamond. Remember that the shape (cut) of the diamond will greatly effect the diamond cost, as well as the clarity of the diamond. You can get multiple, smaller diamonds for less cost than you can a single, larger diamond due to the rarity of mining a larger sized diamond. Sometimes a diamond will be beautiful to the naked eye, and have a reasonable diamond cost- but it may have a lower rating for quality or tone given by the GIA. When you are shopping for your diamond, you'll need to decide what is more important to you; the diamond cost, the size of the diamond, the quality (the rating as given by the GIA), or how it looks when it's worn!