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Diamond Buying Guide

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Step by Step Guide: To Buy Diamond how to select a diamond - diamond identification

1. First, identify the diamond shape desired by the recipient. If you do not know and cannot find out, consider round    or princess cut          

 2.  Set a carat weight minimum based on the recipient's preferences. If they have their heart set on a one carat diamond, even the most beautiful half carat stone will be a disappointment.

 3.  Start with the highest quality diamond of the shape and carat weight minimum you identified in steps 1 and 2, and begin making concessions in the following order until you arrive at a diamond that fits your budget:

·  First, lower the Clarity. See clarity buying tips(below) for more guidance. Go as low as VS2 before makin concessions in other areas.

·  Next, lower the Color. See color buying tips (below) for more guidance. Go as low as H before making concessions in other areas.

·  Finally, lower the Cut. See cut buying tips(below) for more guidance. Go as low as Very Good in round diamonds, and Good in fancy shapes before making concessions in other areas.

·  If the diamonds that match your revised criteria are close to your budget, consider shaving off some carat weight in order to close the gap. A carat weight difference of 10% or less will be very difficult to detect visually. If after following the steps above, you are still outside your budget, repeat the process with new thresholds:

·  First, further reduce Clarity. Go as low as SI1.

·  Next, reduce Color. Go as low as J. If you know the diamond will be set in yellow gold, you could safe drop to K.

·  Finally, reduce the Cut. Go as low as Good in round diamonds, and Fair in fancy shapes.

         At this point, if you are still outside your budget, your next step will depend on your individual preferences               and needs.

·         If the diamond you seek is under one carat, you could consider a drop to SI2 clarity.

·         If the diamond is both a brilliant cut and under 1.50 carats, an L-M color may be perfectly acceptable when set in yellow gold.

·         If size is the primary consideration, you could consider a Fair cut round or fancy shape.

·         If you are still well outside your budget, you may need to consider increasing your budget or reducing your minimum carat weight target.

More Diamond Buying Advise

 Following is a recap of buying tips found throughout the Jewelfields Diamond Education Guide. Use these tips alone,  or in conjunction with the step-by-step guide above.

  Shape Buying Tips

 Most people who receive diamonds as a gift or for an engagement have a shape preference. While other factors  (such as price and quality) should be determined by the purchaser, the choice of shape should include input from the  receiver of the diamond, if at all possible. This is especially true for fancy shape engagement diamonds.

 Unless a particular preference has been expressed, consider a round diamond. Round diamonds tend to have more  brilliance and scintillation than other shapes, they accommodate almost any ring setting, and never go out of fashion. 

 Carat Weight Buying Tips

 Look for diamonds that fall just under popular carat weights such as 1/2 ct. 3/4 ct., 1 ct., etc. Because these  diamonds fall just shy of the popular weight, they are often sold at a slight discount compared to diamonds of full  weight. For example, a .90 carat diamond will typically cost less on a price per carat basis than a full 1.00 carat  diamond. Visually, they are difficult to distinguish. In fact, a smaller carat weight diamond may have a diameter equal  to that of a heavier diamond, making it appear the same size when viewed from above.

 Receivers of diamond engagement rings tend to have the strongest preferences when it comes to shape and carat  weight. Each Jewelfields Diamond is shown as it would appear in a ring as well as actual size, to allow you to  accurately  gauge the size of the diamond you are viewing.

 The most popular carat weights for engagement diamonds are between 0.60 cents and 2 carats. If a diamond under . .50 carats is a budget necessity, consider a marquise cut which appears larger than other shapes of equal carat  weight, due to its elongated cut. 


 Cut Buying Tips

 Unlike the other "Cs" (Carat weight, Color and Clarity) the various Cut grades in existence today were not originated  by GIA. Even though retailers use common terms to describe Cut (such as Excellent, Very Good, Fair, Poor) the  terms are not uniformly defined or applied. In fact, a diamond seller may assign any cut grade they choose, based on  any set of factors they wish. One retailer will use terms such as "Signature Ideal", "Ideal", and "Excellent"; while  another uses "Ideal" to describe all three, and another uses "Excellent" for all. Be cautious when comparing cut  grades from different retailers, as they are most likely inconsistent. 

 Also, be aware of diamond sellers - (diamonds for sale) who assign their own cut grades in place of what IGI or  GIA has already assigned to a  particular diamond. Many popular websites and retail stores display their own, more  generous Cut rating in place of  the IGI grade. Be more aware in case of loose diamond lots, setting size diamonds.

To avoid confusion or misrepresentation of any diamond, Jewelfields uses the same cut grades as employed by IGI or GIA, and does not engage in "cut inflation" by creating other grades ("signature", "super ideal", etc.).

 Cut grade is the most important factor in determining the overall appearance of a diamond because a poorly cut  diamond will seem dull even with excellent clarity and color. Conversely, a well cut diamond can have a slightly  lower color (G-H) or clarity (SI1-SI2) and still look quite beautiful, due to its superior ability to create sparkle and  brilliance.

 For superior brillance choose a diamond with a Cut grade of Very Good or Excellent for round diamonds, and Good  or better in fancy shape diamonds. When choosing a diamond in this range, make sure its symmetry and polish are  Very Good or Excellent, so that the impact of the above average Cut is not obscured.

 For those on a budget, primarily concerned with size, a diamond of Fair - Good cut may be an acceptable choice,  especially in fancy shapes. While the diamond will lack the scintillation and brilliance of a well cut diamond, it will  allow a significant increase in size for the same price.

 Avoid Poor cut diamonds, even if size is the primary concern. Most find these diamonds to be an unacceptable trade  off, despite the lower price. Jewelfields does not offer Poor cut diamonds.

 Because Cut grade provides a single rating which incorporates a variety of factors (such as polish, symmetry,  table%, depth%, culet size, gridle width, etc) it is a simple yet vital tool in evaluating a diamond. A common mistake  is to evaluate these individual factors instead of relying primarily on the Cut grade, which already takes them into  account. Only when comparing two diamonds of identical Cut grade should the individual components of Cut be  considered as further refinements in your search. That said, some general guidelines for these individual factors are: 



 Any cutlet size of Medium or smaller will be invisible to the naked eye, and have no negative impact on a diamond's  appearance.


 An Extremely Thin gridle is more susceptible to chipping, and for that reason should be avoided for diamonds that  are to be set in a ring. Earrings or pendants are less exposed to rough contact and so are less susceptible to chipping  around the girdle. Avoid even Very Thin girdles in Princess Cut diamonds, as this shape already has sharp corners  more prone to chipping. If you do purchase a Princess Cut diamond with a Very Thin girdle, consider setting it in a  style that covers and protects the corners.



 For diamonds with a polish grade of Excellent to Good, any polishing defects are not visible to the naked eye, and  should have no impact on the diamond's overall appearance.

 For diamonds with clarity grades of I1 or lower, even a polish grade of Fair is acceptable, since these diamonds  already possess internal inclusions that are visible to the naked eye, making any polish markings less relevant.

 For diamonds less than .75 carats, any polish grade of Fair or better will not affect the appearance of the diamond to  an untrained observer.

 Poor is the only polish grade that should be avoided regardless of the size or clarity of the diamond. For this reason,  Jewelfields does not carry diamonds with a polish grade of Poor.



 For diamonds with a symmetry grade of Excellent to Good, symmetry should not be used as a primary factor in c  choosing a diamond, since each of these grades is possible in diamonds of exceptional appearance.

 Symmetry is more important in diamonds of VVS2 Clarity and higher, since the very subtle defects produced by Fair  or Poor symmetry (which can resemble pinpoint inclusions), would compromise the diamond's otherwise flawless  appearance.

 Despite its modest impact on appearance, symmetry has a significant impact on price; a diamond with Excellent  Symmetry and Polish may be priced 10%-15% higher than a diamond with Good Symmetry and Polish. This  premium has more to do with consumer's perceived value of "excellent" grades, than the actual affect on a diamond's  appearance.

 Because diamonds with Poor symmetry have defects visible to the naked eye, these diamonds should be avoided in all  cases. For this reason, Lumera does not carry diamonds with a symmetry grade of Poor.

 Visit the Lumera Diamond Education Guide to learn more about Cut. 


 Colour Buying Tips

 The vast majority of untrained observers (and many gemologists) cannot distinguish a color grade from the one just  above or below unless the diamonds are compared side by side in a controlled environment. Even when side-by-side,  changes in color are difficult to detect in I color and higher diamonds.

 Color becomes much harder to detect once a diamond is set in a ring and placed in an environment that contains  color (as opposed to the all white background used in color grading). For instance in white diamonds, an H color  diamond may look as  colorless as a D when set in a ring under normal lighting conditions, especially if the two are  not compared side by  side.

 For the best value in what would appear to the naked eye as a colorless diamond, look for G-J diamonds. Because  color is easier to detect in larger diamonds (just as a large carafe of white wine shows more color than a small glass),  opt for G-H in diamonds over 1 carat, and I-J for those under 1 carat. Once set in a ring, these diamonds will look  just like higher color grade diamonds. Instead of investing in higher color, invest in higher cut, the most important  factor in a diamond's brilliance.

 Because diamonds with more facets reflect more light, they tend to hide color better than other shapes. So, consider  round, princess or other modified brilliant cuts over step cuts such as emerald or asscher if you are concerned about  color.

 If you are concerned primarily about carat weight, and are on a tight budget, consider a yellow gold setting and a  brilliant cut diamond in the K-L color range. The yellow gold will complement the faint body color of the diamond.

 If, while shopping for a diamond, you are ever given a color range (e.g. G-H) as opposed to a specific grade, the  diamond is not certified by GIA. The seller is only estimating the diamond's color using GIA terminology.



 Colorless (D-F) fluorescent diamonds sell at a 5-15% discount to non-fluorescent diamonds since the fluorescence is  perceived as a defect. In fact, the visible effects of faint to medium fluorescence are perceptible only to a gemologist  using a special UV light source.

 Because the fluorescent glow is usually blue (which is the complementary color to yellow) fluorescence can make  diamonds of I-M color appear up to one grade whiter. For this reason, I-M diamonds tend to sell at a slight premium  when they possess Medium to Very Strong fluorescence.

 Overall, fluorescence should not be a major factor in the diamond purchase since its effects on appearance are  negligible, if not slightly positive. The exception would be to exercise caution in purchasing a diamond with strong or  very strong fluorescence in D-H color diamonds (which do not possess enough yellow color to offset the blue  fluorescence).

 Clarity Buying Tips

 If you cannot tolerate imperfections, even those you cannot see, choose a VVS2 or better diamond. About 10% of all  diamonds sold fall into this category.

 The most popular range is the VS1-VS2 diamond. These diamonds appear flawless to the naked eye, and are a  fraction of the price of a truly flawless diamond. Almost half of all diamonds purchased fall into this range. 

 The next most popular range is SI1, where the inclusions are usually not significant enough to impact the appearance  of the diamond for the casual observer. Often, customers will opt for this clarity range in exchange for a higher  cut or color grade. This combination often results in a beautiful, lively diamond with imperfections detectable only  upon close inspection. In diamonds under 1 carat, the same can be said for an SI2 grade. In diamonds over 1 carat  (where clarity is more important, and SI2 inclusions are often easier to detect), an SI2 is often half the price of a  VS1 diamond. About one third of diamonds sold fall into the SI1-SI2 range.

 If you are primarily concerned with size and price, I1 may be your best clarity option. While the inclusions are visible  to the unaided eye, many customers find it to be well worth the sacrifice for what it affords in size.

 The larger the diamond, the easier imperfections are to detect; therefore Clarity becomes more important. For  diamonds over 2 carats, a clarity grade of VS2 or higher is the safest bet for avoiding any signs of visible inclusions.  In diamonds between 1 and 2 carats, clarity grades of SI1 or better will not have inclusions easily visible to the naked  eye. In diamonds under 1 carat, clarity should be considered the least important of the traditional 4 Cs.

 Brilliant cut diamonds (such as round, princess, cushion, oval, pear, and marquise) hide inclusions better than step  cuts (emerald, asscher). When purchasing a step-cut, move up one clarity grade (e.g. purchase a VS2 instead of an  SI1 if you desire the lowest grade that has no visible inclusions).

 If, while shopping for a diamond, you are ever given a clarity range (e.g. SI1-SI2) as opposed to a specific grade, t  the diamond is not certified by IGI. The seller is only estimating the diamond's clarity using IGI terminology.

 So buy diamonds online at our online diamond store. The diamond manufacturers in surat and Israel are selling more      than 50% messionite, these days as it looks very much similar to diamond so have a extra precaution there.  

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