We put in great efforts and investments to create and evolve cutting processes that result in diamonds that are precious and unique. Our two innovative cuts, the Rectangle Brilliant and the Square Brilliant are results of continuous experiment and research. These are sold under our brand ‘aleya™’. The aleya™ logo is laser inscribed on the girdle which is inscribed by international laboratories like GIA. We provide grading certificates and fire trace certificates with aleya™
Brilliant Cut Diamond is a perfectly cut diamond that brings out the very best in a diamond through its cutting-edge shape. The Square Brilliant Diamond™ and the Rectangle Brilliant Diamond™ combine the classic elegance of the emerald cut shape with the radiant brilliance of round diamond and is a sparkling example of exquisite J.B. & Brothers craftsmanship. Both these cuts look bigger than the round diamond and is increasingly becoming the preferred choice of discerning diamond lovers all around.
It is 20% to 25% bigger in comparison to round shape. Prices are more competitive than round. The cut makes it safer for everyday use. Due to its unique cut it has got extra brilliance in comparison to any other shapes present in the market all over the world.
Square or rectangular cuts combine the elegance of the shapes of the diamonds with the brilliance of the round and its 81 facets maximize the effect of its light refraction.
Square Brilliant™ and Rectangle Brilliant™ are patented cuts of J.B. and Brothers Pvt. Ltd.
The unit of measurement used to describe the weight of diamonds is called 'Carat'. The 'Carat' weight is commonly expressed in points or fractions.
1 carat is equal to 0.2 grams, or 0.007 ounces. 5 carats is equal to 1 gram. 141.7 carats is equal to 1 ounce. There are 100 points in 1 carat. For instance, 0.33 carats is generally expressed as 33 points, or 1/3 of a carat.
Carat means weight of diamond which reflects its size. One carat diamond weighs 100 cents. (1 ct = 100 cents ) Diamond sizes can be expressed by its weight (unit), pointers or stones per carat.
Price consideration with Size Range.
Weight (unit): 1ct=100 cents 5cts = 1.000gms
Diamonds come in every color of the spectrum, but the most popular gems are colorless. Truly colorless, icy-white diamonds are extremely rare, and therefore, most costly. Stones are graded by color and given designations dependent on how far they deviate from the purist white.
The best way to see the true color of a diamond is by looking at it against a white surface. Although the majority of diamonds come in shades of white, the gems also come in a spectrum of majestic colors, from red and canary yellow to blue, green and brown. These colorful diamonds, known as fancies, are valued for their depth of color, just as white diamonds are valued for their lack of color.
Grades in the color of diamonds range from D - Z. D is being truly colorless and of the highest quality. E and F are also graded as colorless while G, H, I and J are near colorless. Diamonds graded K, L and M will have obvious hints of color and as the scale approaches P, you may find subtle changes in hue and tone. The exceptions to the rule are 'Fancy' diamonds in well-highlighted colors that include pink, blue, red, green and canary yellow. These are particularly rare and highly treasured.
Many a times it’s been noticed that a stone has a color shade apart from its actual color to give you a brief idea of the same we have different color shades
Code - Shade
Certain diamonds are called 'Fancies'. These stones have intense natural colors that in some cases are very rare and command exceptional values. These stones are not color graded with the scale above. Brown and yellow diamonds are the most common members of the Fancy group and have a distinct beauty of their own. Reds, blues and greens are extremely rare and highly sought after by designers and collectors. Colors are available in Blue, Brownish Pink, Grayish Black, Green Pink, Pinkish Brown, Yellowish Brown, Yellowish Green, White, Off White, Yellow and Brown.
Fancy colors are generally graded and categorized as following
Color Scale
Clarity Grade
A diamond's clarity refers to the presence of identifying characteristics on and within the stone. While most of these characteristics are inherent qualities of the rough diamond, and have been present since the earliest stages of the crystal's growth below ground, a few are actually a result of the harsh stress that a diamond undergoes during the cutting process itself.
To enhance our clarity grading we introduce a new factor i.e. Table Inclusion (TI). This can be Black or white inclusion on table in proportion to the clarity
These ratings are dependent on the maximum inclusions for every diamond in each clarity grade and are visible with 10X magnification.
Black Inclusion Proportion: Natts (BI)
This term is used to indicate the amount of black inclusions as compared to the total inclusions in the diamond.This is sub divided in two parts 1: BIC = BLACK IN CENTER ,2: BIS = BLACK IN SIDE
These ratings are dependent on the maximum Black inclusions for every diamond in each clarity grade and are visible with 10X magnification
Code
Opens**
Opens (OP)
This term is used to indicate open position in diamond if there is any open on the surface of diamonds. This is subdivided in three parts: - (1) OPTA = Open on Table, (2) OPCR = Open on Crown, (3) OPPV = Open on Pavilion.
Open on Table (OPTA)
Open on Crown (OPCR)
Open on Pavilion (OPPV)
These ratings are dependent on the maximum Open for every diamond in each clarity grade and are visible with 10X magnification.
Types of Inclusion (TOI)
Types of Inclusion depend upon the intensity of concentration of inclusion in entire diamond and ease of its visibility in diamonds.
These ratings are based on the presence and intensity in the entire diamond considering the clarity grade with 10x magnification.
KNOT
A "knot" is an included diamond crystal that extends to the surface of the diamond. In other words, it is a diamond crystal which reaches the polished surface of a finished diamond. With proper lighting and magnification you may be able to see the boundary between the knot and the diamond which contains it. Knots sometimes resemble raised areas on a facet surface or group of facets. Differences in the polish quality may be visible on the surface of the knot and the facet where it is located. We typically reject diamonds for this characteristic because we feel that knots provide a potential durability risk to the longevity of the diamond. The first picture below shows a knot as seen through our Gem Scope using a normal light source; we diffused the light source for the second picture to provide you with a different perspective of the inclusion.
Graining
Graining is divided in to two parts namely Internal graining (IG) and surface graining (SG). Internal inclusion of irregular crystal growth may appear milky like faint lines or streaks, or may be colored or reflective. The inclusions or graining that appears on the surface of the diamond is known as surface graining.
The comment on a lab report indicating "Internal Graining Not Shown" should not be reason for alarm because it refers to clarity characteristic which is usually not readily visible without the use of extremely high magnification. Internal Graining should not be considered an "absolute characteristic" because the visibility depends on the lighting conditions and the specific angle by which the diamond is being evaluated. It might be visible to an experience diamond grader who is examining the diamond under laboratory conditions, but may never be detected by other people. Essentially internal graining refers to part of the grain structure of the diamond which was visible as a kind of transparent line to the grader. The degree of the visibility of the grain lines will have an effect upon the clarity grade of the diamond and if no other clarity characteristics are present then the graining may be the basis for the clarity grade of the diamond. For instance, a diamond that contained small diamond crystals which by themselves would warrant a clarity grade of VS-1 might be graded as a VS-2 if internal graining were present. However another diamond that did not contain the diamond crystals might be graded as VVS-2 if the grade is based upon internal graining and the comment "clarity grade based upon internal graining" would appear under the "comments" section of the lab report while nothing is indicated under the "keys to symbols" by the plotting diagram. This series of photographs shows the very subtle effect of internal graining as seen within a diamond we purchased for inventory at various degrees of magnification. Notice how the internal graining is not readily visible in the first picture which was taken using a magnification level of about 20x. The internal graining is barely visible in the next two photographs which were taken of the table facet at about 40x magnification, the grain line appears as a kind of translucent line as indicated by the light blue arrows. We increased the magnification substantially for the remaining pictures which show the internal grain line as seen through our Gem Scope using normal and diffused light sources.
Eye Clean
These ratings are dependent on the maximum inclusions for every diamond in each clarity grade and visible with naked eye.
Diamond's beauty depends upon optical properties such as high Refractive index, color dispersion, luster & high degree of clarity. We give strong thrust on cut grading. Due to well equipped manufacturing system our stones are best polished. Luster means fire of diamonds. Better the Polish, brighter & more lustrous the stone. At the time of cutting take care that the light entering from top should not be lost through the teak pavilion sides. So Customer gets to observe almost 100% light from a round brilliant cut diamond. i.e. (82-83% from total internal reflection & 17 -18 % from luster). This phenomenon is known as "LIFE". As diamond critical angle is 24*, brilliance of diamond depends upon pavilion facets & pavilion angle. Cut determines brilliance. In RBC diamond Crown facets act like small prism, which split white light. Small crown gives less Dispersion & more Brilliance vice versa.
Lay people often confuse a diamond's SHAPE with its CUT; this is most likely due to the industry's synonymous use of the terms "cut" and "shape" to describe a diamonds shape (outline), i.e. marquise cut, round brilliant cut, or pear shape. In reality when we refer to the "cut" or "make" of a diamond, we are really referring to a compilation of three factors. It’s PROPORTIONS in terms of degrees and percentages... the quality of its POLISH or finish... and the SYMMETRY of its facets... These three factors result in the "Overall Cut Grade" of the diamond.
Polish can be result of the finishing process or be affected by blemishes created after cutting. The term "Polish" refers to the degree of "polishing lines" that appear on the surface of a finished diamond which can be seen with the use of 10x magnification. These polishing lines are caused by the minute diamond crystals which are embedded in the polishing wheels used by the diamond cutters to polish the surface of the diamond after cutting. While not quite the same in appearance, they are similar in concept to the swirl marks left on the surface of a car from the use of an orbital buffer, but are much less noticeable. It is important to note, however, that polish lines are straight in appearance.
Symmetry refers to the precision with which the facets of a diamond are aligned with each other and the consistency of facet shape and size per given section. The symmetry rating reflected on a diamond grading report is not an indication of the proportions of a diamond.
Faceted diamond forms a well aligned, symmetrical & balanced form that reveals the well known eight rayed arrow pattern which you can see through special device like the Fire scope by keeping diamond face up. Here symmetry pattern can be seen in perfect order. Perfect Heart shape will be observed from the pavilion side. Maximum Life, Fire, & Sparkle are observed in diamonds that has been cut, faceted in certain specific proportions. These parameters are followed by our skilled artisans.
When we speak of Diamond Fluorescence, we are referring to the diamonds tendency to emit a soft colored glow when subjected to ultraviolet light (such as a "black light"). Fluorescence is a form of illumination that is created when a diamond is exposed to low or high wave ultraviolet radiation. Faint or medium fluorescence will rarely affect a diamond's appearance. Usually fluorescence is unnoticed by the human eye in ordinary light. Fluorescence can cause a diamond to appear less clear or slightly hazy if the diamond exhibits very strong or extreme fluorescence. When selecting your diamond it is best to choose a diamond that has no fluorescence or faint to moderate fluorescence.
When we speak of Diamond Fluorescence, we are referring to the diamonds tendency to emit a soft colored glow when subjected to ultraviolet light. Different diamonds emit different colors, examples of which are listed below
This is another parameter, which has been found of importance in determining the exact purity of the diamond. The amount of light that the stone reflects and the type of light that is emitted by the stone determine luster of a diamond. Luster refers to the quality of a surface in reflected light. The luster of a diamond is usually described as adamantine luster.
The outer edge of a diamond which forms a band around the stone. The girdle can be faceted or non-faceted
A diamond's culet is the point on the bottom of a diamond's pavilion. A diamond's culet may be pointed or it may be blunted with a small facet. The culet facet can vary in size. This culet's size determines the grade that the culet is assigned.
Occasionally a cutter will find the need to remove an inclusion near the surface or to compensate for facets which do not meet correctly and he will add an "extra facet". Extra facets have no effect on clarity grades. This is subdivided in Two parts: - 1) EFCR: - Extra Facets on Crown, 2) EFPV: - Extra Facets on Pavilion.
Extra Facets on Crown (EFCR)
Extra Facets on Pavilion (EFPV)
