Diamonds

Selecting the perfect Diamond -
The irresistible beauty of Diamonds, its purity and durability makes them the most sought after. Diamonds have been used for centuries and are known to be the ultimate gift.

It’s always advised before making a purchase that you have the basic understanding of the points to consider when buying a Diamond. The Winsome Diamonds And Jewellery Limited Buyer’s Guide simply defines the four C’s that Diamond professionals and connoisseurs the world over believe in which is – Cut, Color, Clarity and weight of Carat.


 
Color
 

Colorless Diamonds are quite hard to find. They are beautiful and highly prized amongst connoisseurs. But for an untrained eye, most diamonds look white and for a professional, there are differences that only they can identify.
The diamonds have an almost unperceivable tint of colors. The various degrees of color tint seen are assigned a letter from D-Z, denoting its position on the Diamond color scale. This scale shows the purest white color of D, to the yellowed tints of Z.

 
   
     
  • D, E, F. These purest tints are rare and comparatively expensive. Their rarity color assigns them a higher market price.
     
  • G, H, I. Often offering much better value, to the untrained eye they seem the exact same color as the more expensive D, E and F colors.
     
  • J, K, L. Discounted for their barely perceivable yellowish tints, Diamonds in this range offer excellent value.
     
  • M - Z. Further discounted for their more distinct yellow hues.
     
 
Cut & polish
 

The Round Brilliant Cut Diamond Accounts for over 80% of diamond sales worldwide. Although the Diamond appears round, there are many other beautiful Diamond cuts that warrant serious consideration. The eight most popular diamond cuts are displayed below

 
Popular Diamond Cuts



Emerald Cut
Heart Cut
Marquise Cut
Oval Cut




Round Brilliant Cut
Pear Cut
Princes Cut
Radiant Cut

Diamonds are cut, shaped and proportioned to a remarkably uniform ideal. Marcel Tolkowsky, in 1919 - published his opinions of what Diamond proportions result in the optimum balance of Brilliance and fire. The detailed review of Tolkwosky’s proportions is outside the scope of this guide, which obviously will be a lot to read if a buyer wished to improve his knowledge on Diamonds. However, Diamond graders do take these proportions into account when evaluating the cut of a Diamond. Some of the other attributes that need to be considered include:
 
Symmetry
 
The cut should exhibit good facet symmetry. Facets should be aligned straight in relation to the Diamond’s girdle and also to each other.

 
Polish Condition
 
The facet polish condition should be good. Surface pits and polishing lines should not be visible.
Diamonds are cut in a variety of cuts. Although not superficially visible as Colored Gems, but can be recognised from many of the shapes listed below. The outlines and the crowns may look the same, with the exception of an Emerald Cut Diamond; the pavilions of diamonds usually resemble those of a Round Brilliant Cut Diamond.

 
Other Diamond Cuts
 
 
Carat weight
The weight of Diamond is measured in Carats. The unit of measurement originates from the traditional use of carob seeds to weigh Gemstones. Carob seed were used because of their consistent size and shape. The term carats is often confused with “Karats”. “Karat” is a measurement of purity of Gold.
Diamonds are cut uniformly to ideal maximum Brilliance; Sparkle, and Fire. With this uniform cutting and proportions, we can very conveniently and accurately equate Diamond Carat Size with their millimeter weight.

Round Brilliant Cut Diamond
1 mm 2 mm 3 mm 4 mm 5 mm 6 mm 6.5 mm 7 mm 7.5 mm
0.01 Ct 0.03 Ct 0.10 Ct 0.25 Ct 0.50 Ct 0.75 Ct 1.00 Ct 1.25 Ct 1.65 Ct
 
The price of the Diamond increases with its Carat weight. Large Diamonds are always rarer than smaller ones, so Carat prices rise considerably.
 
 
Clarity
Inclusions in the diamonds are tiny natural features within the body. Nearly all Gemstones contain some inclusions, however many are microscopic and can only be glimpsed under magnification. If inclusions do not interfere with the Brilliance, Sparkle and Fire seen by the passage of light through the Gem, they do not affect the beauty or value.

Clarity in Gemstones is determined by judging both the amount and location of inclusions.
Clarity affects both the beauty and value of the diamonds. The higher the clarity grade assigned from the list below, the higher the value.

 
 
Diamond Grade Appearance Of The Gem To The Naked Eye
Flawless Internally and Externally Flawless
IF Internally Flawless
VVS1 Very Very Slightly Included Inclusions not visible to the naked eye and difficult to detect with a 10x loupe.
VVS2
VS1 Very Slightly IncludedInclusions not visible to the naked eye whilst comparatively easy to see with a 10x loupe.
VS2
SI1 Slightly Included Quite easy to see with the close naked eye, large and/or numerous with a 10x loupe.
SI2
I1 IncludedModerate effect on appearance or durability.
I2 IncludedSevere effect on appearance or durability.
I3 IncludedSevere effect on both appearance and durability.

 
   
   
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