Learn About Diamond


Karat Square’s diamond education is designed to answer all your questions. It explains a diamond's characteristics, how those characteristics influence appearance, and which are more important than others.



1.Cut

The cut of a diamond determines its brilliance. Put simply, the better a diamond is cut, the more sparkle it will have.

Key Points :

  • 1. Of the 4Cs, cut is the most important characteristic because it has the greatest influence on a diamond's sparkle. Simply put, the better the cut grade, the more it will sparkle.
  • 2. Gemologists recommend choosing the highest cut grade within your budget. Very Good or better, if possible.
  • 3. Variety of products and many options available.


A diamond's cut grade is an objective measure of a diamond's light performance, or, what we generally think of as sparkle. When a diamond is cut with the proper proportions, light is returned out of the top of the diamond (which gemologists refer to as the table). If it is cut too shallow, light leaks out of the bottom; too deep and it escapes out of the side.



2.Color

A diamond's color grade refers to the lack of color. The more colorless the diamond, the higher quality grade it will receive.

Key Points :

  • 1. Of the 4Cs, color is the second most important characteristic because the human eye detects sparkle first (diamond cut) and color second.
  • 2. As a diamond's color grade improves, it's price increases. However, at a certain point, the color difference cannot be detected unless under professional magnification.
  • 3. To maximize your budget, choose what's called a near-colorless diamond (grades G-H) because the naked eye will still not see traces of color for these grades.

Color manifests itself in a diamond as a pale yellow. This is why a diamond's color grade is based on its lack of color. Karat Square offers only Colorless (grades D-F) to Near-Colorless (grades G-H) diamonds to assure that any natural color present is typically undetectable to the unaided eye.

Diamond Color Grade Chart



  • "D" :Absolutely Colorless The highest color grade. Extremely rare.
  • "E-F" :Colorless Minute traces of color can be detected by an expert gemologist. A rare diamond.
  • "G-H" :Near Colorless Color difficult to detect unless compared side-by-side against diamonds of better grades. An excellent value.
  • "I-J" :Near Colorless An exceptional value with slightly detectable warmth or tone.
  • "K-Z" :Noticeable color Not carried by Karat Square.

Expert Buying Tips

  • 1. For the purist, look for a Colorless grade of D-F for a diamond with no discernible color under magnification.
  • 2. For the best value, choose a Near-Colorless grade of G-J for a diamond with no discernible color by the naked eye.
  • 3. Consider platinum or white gold settings when buying higher color grade diamond; a gold setting may show through a colorless diamond.


3.Clarity

Almost all diamonds have tiny imperfections. Diamonds with few or no imperfections receive the highest clarity grades.

Key Points :

  • 1. Of the 4Cs, clarity is the third most important characteristic because most imperfections cannot be seen unless under professional magnification. (Cut is the most important 4C to consider)
  • 2. Clarity refers to the tiny imperfections called inclusions. Diamonds with the least and smallest inclusions receive the highest clarity grades.
  • 3. To maximize your budget, choose what's called an eye-clean diamond (grades VVSI-SI1), which means it has no visible inclusions to the naked eye.

Clarity refers to the tiny, natural imperfections that that are present in all but the rarest diamonds. The less inclusions, the better the clarity. Gemologists refer to these imperfections by a variety of technical names, including blemishes and inclusions. Because these imperfections tend to be microscopic, they do not generally affect a diamond's beauty in any discernible way.

Diamond Clarity Grade Chart


"FL & IF" Flawless, Internally Flawless

Under 10x magnification, inclusions are not visible, rarest clarity grade.
FL: No visible blemishes, <1% of diamonds
IF: Very slight blemishes, <3% of diamonds

"VVS1, VVS2" Very, Very Slightly Included

Under 10x magnification, inclusions are so small, it is difficult to see..
VVS1: Inclusions in bottom-half, pavilion
VVS2: Inclusions in top-half, crown

"VS1, VS2" Very Slightly Included

Under 10x magnification, inclusions are minor, slightly visible.
VS1: Slightly less inclusions than VS2
VS2: Slightly more inclusions than VS1


"SI1, SI2" Slightly Included

Under 10x magnification, inclusions are noted, more visible.
SI1: Inclusions possibly invisible to the eye
SI2: Inclusions often visible to the eye

"I1" Included

Under 10x magnification, inclusions are obvious, visible to the eye.
I1 Grade loose diamond are not offered by Karat Square

"I2, I3"

Under 10x magnification, inclusions are obvious, visible to the eye.
Grade not offered by Karat Square.


Expert Buying Tips

  • 1. Select an "eye-clean" diamond - one that has no imperfections visible to the unaided-eye through the crown. An excellent value, diamonds of this clarity are much less expensive than flawless (FL) or internally flawless (IF) diamonds, which are extremely rare and command higher prices.
  • 2. If you're considering a diamond with an SI clarity grade, call to speak to a diamond and jewelry consultant who will review the diamond to ensure the imperfections are not visible to the unaided eye.


4.Carat

This is the term with which people are most familiar, but bear in mind that carat is specifically a measure of a diamond's weight.


Key Points :

  • 1. The most well-known and misunderstood characteristic of the 4Cs is Carat Weight. It actually refers to the diamond's weight, not its size.
  • 2. A diamond's cut impacts how large the Carat Weight will appear. Smaller carat weight diamonds will appear larger with higher cut grades.
  • 3. To maximize your budget, consider buying a diamond that is slightly below your ideal carat weight. For example, instead of a 3.0 carat diamond consider buying a 2.9 carat weight.


5.Carat Weight considers two factors:

  • A Diamond's Top Diameter
    It is important to measure, in millimeters, the distance across the top (diameter) of the diamond as this is how it is viewed when set into a ring.
  • A Diamond's Cut Grade
    A diamond's cut grade should also be considered. When a diamond is well cut (grades Very Good or higher), the light reflected out of the top making it appear larger.

How do these two Carat Weight factors help when purchasing a diamond?


The diamond's diameter and cut grade reveal that smaller carat weight diamonds will appear larger with higher cut grades (Very Good and Ideal). On the flip side, a larger carat weight diamond could appear smaller with lower Cut grades (Good, Fair and Poor).


Expert Buying Tips

  • 1. If a large carat weight is important to you, yet you're working within a strict budget, consider a diamond with a good cut, SI1-SI2 clarity, and an I or J color grade.
  • 2. Diamond prices jump at the full- and half-carat weights. Diamonds just below these weights cost significantly less, and, because carat weight is distributed across the entirety of the diamond, small size differences are almost impossible to detect.
  • 3. Keep in mind that the smaller the finger, the larger the diamond will appear. A 1.5-carat diamond solitaire looks much larger on a size 4 finger than a size 8.
  • 4. Not all settings will fit all diamond carats or shapes. If you have already selected a setting, check the diamond specifications of your ring or ask your Karat Square Diamond and Jewelry Consultant (1 800-242-2728) for help. If you need a special jewelry piece created, Karat Square can accommodate almost any request.


6.Shape

Shape describes a diamond's form, mostly from a top view, and all shapes (round, princess, radiant, etc.) have different attributes.


At Karat Square, we apply the same high quality standards to all of our diamond shapes. We have an exceptional collection of traditional round diamonds and we also offer the finest non-round, or "fancy-shaped", diamonds available. All of our certified diamonds are graded by the GIA or AGSL to have FL-SI2 clarity, D-J color, and Ideal, Very Good, Good, or Fair cut. Our Signature Diamonds are the finest quality diamonds available, and we offer them in round, princess-cut, Asscher-cut, and emerald-cut shapes.

Choose Your Diamond Shape


Since all diamond shapes are very different, unique characteristics determine quality for each shape. Select your shape below to learn how to recognize the most beautiful diamond. If you have additional questions, feel free to contact one of our Diamond and Jewelry Consultants who can help you find the diamond that's perfect for you.





Round

The round brilliant cut diamond is by far the most popular and most researched diamond shape available today. For almost 100 years, diamond cutters have been using advanced theories of light behavior and precise mathematical calculations to optimize the fire and brilliance in a round diamond. In addition to being the most popular and researched shape, a round diamond will typically give you more flexibility in terms of balancing cut, color, and clarity grades while still getting the fire and brilliance you want.

To maximize the brilliance of a traditional round diamond, select one in the two highest cut grades, ideal or very good, and choose ideal, excellent, or very good polish and symmetry grades. For the finest ideal round diamonds available, view the Karat Square Signature Round Collection.


Princess

This is our most popular non-round diamond. Its beautiful brilliance and unique cut makes it a favorite for engagement rings. The princess has pointed corners and is traditionally square in shape. When choosing a color grade, consider that while the price of a J-color non-round diamond is exceptional, color may be slightly visible in its corners. Also, princess-cut diamonds can vary greatly in how square or rectangular they are. To find the dimension of princess you want, look for the length-to-width ratio in our interactive diamond search and on each diamond's detail page. This will determine what the diamond will look like when viewing it from above. Here are length-to-width ratios for princess-cut diamond shapes that are pleasing to the eye.

For a princess diamond shape that is square, look for length-to-width ratios between 1 and 1.05. If you prefer more of a rectangular shape, look for length-to-width ratios greater than 1.10. For the most brilliant princess available, view the Karat Square Signature Princess-Cut Collection.


Emerald

What makes this shape different is its pavilion, which is cut with rectangular facets to create a unique optical appearance. Due to its larger, open table, this shape highlights the clarity of a diamond. If you choose an emerald-cut with a lower clarity grade, such as SI, be sure to review the clarity plot on the diamond certificate. Also, emerald-cut diamonds can vary greatly in how rectangular they are. If you'd prefer an emerald cut with a squared outline, look for an Asscher-cut diamond. To find the shape of emerald you want, look for the length-to-width ratio in our interactive diamond search and on each diamond's detail page. The length-to-width ratio will determine the diamond's outline, or what it will look like when viewed from the top.

For the classic emerald-cut shape, look for a length-to-width ratio between 1.30 and 1.40. For the highest standard of craftsmanship available in an emerald-cut diamond, view the Karat Square Signature Emerald-Cut Diamond Collection.


Asscher

This beautifully unique shave is nearly identical to the emerald-cut, except that it is square. Also, this shape has a pavilion that is cut with rectangular facets in the same style as the emerald-cut. If you choose SI-clarity be sure to view the clarity plot on the diamond certificate, because this shape highlights the clarity of the diamond. When choosing a color grade, consider that while the price of a J-color non-round diamond is exceptional, color may be slightly visible in its corners.

All Asscher-cut diamonds from Karat Square will appear square, because each one is guaranteed to have a length-to-width ratio between 1.00 and 1.05. For our ideal Asscher-cut diamond, view the Karat Square Signature Asscher-Cut Diamond Collection.


Marquise

The shape of a marquise diamond can maximize carat weight, giving you a much larger-looking diamond. This brilliant-cut diamond looks beautiful set with round or pear-shaped side stones, and the length of the marquise makes fingers appear long and slender. To find the dimension of marquise you want, look for the length-to-width ratio in our interactive diamond search and on each diamond's detail page. The length-to-width ratio will determine the diamond's outline, or what it will look like when viewed from the top.

For the most traditional marquise-cut diamonds, look for length-to-width ratios between 1.75 and 2.25.


Oval

An oval diamond has beautiful brilliance that's similar to a round diamond. Oval diamonds are also very popular as their length can accentuate long, slender fingers. To find the dimension of oval you want, look for the length-to-width ratio in our interactive diamond search and on each diamond's detail page. The length-to-width ratio will determine the diamond's outline, or what it will look like when viewed from the top.

For the most traditional oval diamonds, look for length-to-width ratios between 1.33 and 1.66.


Radiant

Trimmed corners are the signature of this diamond, and they help make the radiant-cut a popular and versatile choice for jewelry. A radiant-cut looks equally beautiful set with either baguette or round side-diamonds. Radiant-cut diamonds can vary in their degree of rectangularity. To find the dimension of radiant you want, look for the length-to-width ratio in our interactive diamond search and on each diamond's detail page. The length-to-width ratio will determine the diamond's outline, or what it will look like when viewed from the top.

For a radiant diamond shape that is square, look for length-to-width ratios between 1 and 1.05. If you prefer more of a rectangular shape, look for length-to-width ratios greater than 1.10.


Pear

This brilliant-cut diamond is also called a teardrop for its single point and rounded end. The unique look of the pear shape helps make it a popular choice for a variety of diamond jewelry. If you choose an elongated pear shape, the length of the diamond creates a subtle slimming effect on the fingers.

To understand what the diamond will look like when viewing it from above, look for the length-to-width ratio on each diamond's detail page. For the most traditional pear-shaped diamond, look for a length-to-width ratio between 1.45 and 1.75.


Heart

The heart is the ultimate symbol of love. The unique look of the heart-shaped diamond helps make it a distinctive choice for a variety of diamond jewelry. When choosing a color grade, consider that while the price of a J-color heart shaped diamond is exceptional, color may be slightly visible in its corners. To find the dimension of heart-shape you want, look for the length-to-width ratio in our interactive diamond search and on each diamond's detail page. The length-to-width ratio will determine the diamond's outline, or what it will look like when viewed from the top.

For a more traditional heart-shaped diamond, look for length-to-width ratios between .90 and 1.10.


Cushion

This unique shape has been popular for more than a century. Cushion-cut diamonds (also known as "pillow-cut" diamonds) have rounded corners and larger facets to increase their brilliance. These larger facets highlight the diamond's clarity, so if you choose an SI clarity grade, be sure to review the clarity plot on the diamond certificate. Cushion-cut diamonds are available in shapes ranging from square to rectangular. To find the dimension of cushion you want, look for the length-to-width ratio in our interactive diamond search and on each diamond's detail page. The length-to-width ratio will determine the diamond's outline, or what it will look like when viewed from the top.

For a cushion-cut diamond that is square, look for length-to-width ratios between 1 and 1.05. If you prefer more of a rectangular shape, look for length-to-width ratios greater than 1.15.




Shop For

Gold & Diamond Jewelry online

We at Karat Square have an enormous collection of gold and diamond jewelry online in India. Our jewelry designs are exquisitely made for today's Indian woman. Be it solitaire engagement rings, gemstone jewelry or your every day wear jewelry collection, you will be sure to find something on karatsquare.com. The time has gone when gold jewelry was considered an investment. The new generation considers it as a symbol of love and care. A light weight jewelry gifting a jewelry has been the popular option and will continue to grow in near future.


Contemporary Jewellery Designs Online

At Karat Square, we are well aware of today's woman's desires for jewelry. Hence, you will find all our designs to be contemporary, classic, modern, timeless yet elegant. What Karat Square brings is a collection of best jewelry designs online under various categories. Be it engagement rings, hoops and cuffs, light weight necklaces, you will get to see a huge variety of jewelry designs while browsing through our online jewellery store.

Shop with Karat Square

Shopping online for fine jewelry or specifically diamond jewelry has never been easier. We at Karat Square only sell Hallmarked gold and 100% certified diamond jewellery. We have taken this approach to make our online jewelry shopping more trustworthy for our customers. All our products are certified by third-party international laboratories such as GIA, IGI, EGL, GSI and BIS Hallmark. Other than this, we have made luxury jewelry more affordable by keeping our prices up to 30% lower than traditional retail stores. We could achieve this by constantly optimizing inventory, lower overheads, directly sourcing are diamonds from the world's diamond city Surat and most importantly eliminating the middleman from the supply chain.

Karat Square offers easy returns and lifetime exchange and buyback services so that you can be worry free. We have made our offerings on multiple platforms so that you can just sit back and shop the latest jewelry designs from the comfort of your home. Our higher priority for quality makes sure that the luxury piece you will get is of top notch quality. We manufacture our own jewelry hence we can control the quality by constant inspections at the various stages of the manufacturing process.

Online jewelry store in India.

Searching for your favorite party or everyday wear jewelry designs will not be a hassle. And even if you don't find what you like we can also make it for you by custom designing it. Be it earrings, rings, necklaces, pendants, bracelets, you will find a variety of latest precious jewelry designs all under one roof at Karat Square. Our motto is to redefine the way that jewelry has been worn in India. Our designs are untraditional, uncommon, edgy and fussy, so if that sounds like you, you are in the right place.

Customized and Personalized Jewelry Online

We have made it possible to customize a unique piece of jewelry online from scratch. We can do this by leveraging 3-D technology to turn your imagination into reality. At Karat Square you can customize your choice of jewelry as per your requirements. So go ahead and create that one-of-a-kind luxury piece for your loved ones. The same way we can also make personalized gemstone jewelry, name jewelry, initials jewelry and engraving onto your favorite piece.