Clarity Grading:

Clarity Grading:


Clarity is a gemstone's relative freedom from clarity characteristics, which are classified as inclusions and blemishes.Inclusions are enclosed within a diamond or they extend into the diamond from its surface. Blemishes are confined to the diamond's surface.Inclusions typically have more influence on a diamond's clarity grade than blemishes.

While Grading Clarity five factors plays very important role, which are as follows:


1) Size of Inclusions
2) Number of Inclusions
3) Position of Inclusions
4) Nature of Inclusions
5) Relief of Inclusions or Impact of Inclusions

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Symmetry:

Symmetry:

“Symmetry”refers to the exactness of the shape of a diamond, and the Symmetrical arrangement and even placement of the facet. Better the symmetry better is the light behavior, which results in an attractive diamond.
Symmetry is also assessed on a scale ranging from excellent to fair.

We Grade Symmetry as  follows:

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Polish in Brown Diamonds

Polish:

Polish refers to the smoothness of the surface of every facet that is cut into a raw diamond. This part of the diamond cutting process requires the utmost care and attention to minute detail. With modern technology, polish does not vary nearly as much now as it did in years past. Excellent polish greatly enhances a diamond's brilliance because it creates less diffusion as light enters and exits the diamond. Even a diamond with slight depth or symmetry problems will appear brilliant if the polish is of the highest grade.
Diamond Polish refers to how smooth the outside surface of a diamond has been polished. Polish is the quality of a Diamond's surface condition as a result of the polishing process or to blemishes created after the cutting process, often referred to as "wear and tear”. Polish features are located on the surface & do not visibly penetrate into the diamond at 10X Magnification.

We grade Polish as per below order :

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Cut in Brown Diamonds

All of the four C's have an effect on the beauty of a diamond, but the cut is most important factor. The cut (number of facets, proportions, symmetry, etc.) determines a diamond's brilliance. When light enters the top of the diamond, it reflects and refracts within the diamond. How light is directed through the number of facets and the placement of those facets in relationship to each other determine a diamond.
The way in which a diamond is cut determines how brilliant the diamond will be. A well-cut diamond reflects the maximum amount of light that enters it. The exact angles of the ideal cut diamond have been mathematically calculated and proven to reflect the maximum amount of light.

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Color & Color Hue

Color & Color Hue

As Color of Brown Diamond Plays a vital role in fetching more price & also it plays important role for Naked Eye Appeal of the stone, we take special care while grading color of the Brown Diamond.

Color: We grade color as follows:

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As those dealing in Brown are very much aware of C1 to C7 color scale

We grade Light Champagne Brown Diamonds (C1 & C2) as Natural Fancy Very light Brown & Natural Fancy light Brown respectively. If they are Medium Champagne Brown Diamonds (C3 & C4) we grade them as Natural Fancy Medium Brown & Natural Fancy Brown respectively. If they are Dark Champagne Brown Diamonds (C5 & C6) we grade them as Natural Fancy Intense Brown & Natural Fancy Vivid Brown. If the Diamond is Fancy Cognac i.e. C7 we grade them as Natural Fancy Deep Brown. We also grade C8 if the Diamond's color is Fancy Very Rare Cognac as Natural Fancy Vibrant Brown.

Color Hue:

Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid and Fancy Dark are fancy grades representing the combined effect of tone and saturation on a certain hue. These fancy grades vary in intensity, in different hues since the highest saturation levels are reached in different levels of tones according to the hue. This phenomenon is apparent when one examines the asymmetrical appearance of the makeup of color space.
The Color Hue, which we are aware of in most cases, is Fancy Orange Brown (Mix tone or Hue of Orange & Brown). Fancy Pinkish Brown (Mix tone or Hue of Pink & Brown). Fancy Brownish Greenish Yellow (Mix tone or Hue of Brown,Green & Yellow). Like wise the grade is given as per the Hue or tone present in the Diamond.

Now for E.g.:

If our diamond is C7 i.e. Natural Fancy deep Brown with orange and red hue or color tone from face up. We will grade it as Natural Fancy deep reddish orangish Brown.  

C-1 To C-8 Brown Diamond's Color Grading Scale

C-1 To C-8 Brown Diamond's Color Grading Scale

Information about Brown Diamonds

Brown DiamondsWhat exactly are Brown Diamonds? Brown diamonds have a tint of brownish body color. Diamonds can occur in nearly any color, though yellow and brown are by far the most common. The Brown diamond is a member of the Carbon family and is the hardest substance known. The word Diamond is derived from the Greek word "adamas" which means "hardest metal" reflecting the property of the stone. Diamonds with a detectable hue, other than yellow or brown are known as colored diamonds. If the colour is strong enough, a stone may be referred to as a fancy colored diamond by the trade. There are Natural fancy color diamonds and Synthetic Color Diamonds. For more information on any of these subjects please refer to the Index.

Definition of Diamond Color
What is the Definition of a Brown Diamond? Colored diamonds contain impurities or structural defects that cause the coloration. The most common impurity, nitrogen, causes a slight to intense yellow coloration depending upon the type and concentration of nitrogen present. Brown “amber” diamond crystals show some deformation called “brown graining”. They also contain nitrogen.

Cost of Brown Diamonds
The Australian Argyle mines produce a significant quantity of brown diamonds. Brown diamonds are usually less expensive than any other colors due to the fact that they are less appealing to most consumers. The color descriptions of these diamonds are now described and marketed as Cognac or Champagne.

The Color Scale or Grade for Brown DiamondsArgyle Diamonds created the following scale for brown diamonds to separate them into their progressively darker tonal ranges which are described as follows:

• Very light brown (champagne)
• Medium brown (champagne)
• Brown (dark champagne)
• Dark brown (fancy cognac)

Diamond Color Scale or Grade for Brown Diamonds
Color	Diamond Color Scale or Grade
Light Champagne	C1 & C2
Medium Champagne	C3 & C4
Dark Champagne	C5 & C6
Fancy Cognac  & Fancy Very Rare Cognac	C7 & C8