Product Portfolio
Asian Diamonds is predominantly engaged in the Sourcing, Retailing and Wholesaling of a variety of Round and Fancy Shape Loose diamonds, in order to satisfy to the needs of different clients, the group will continuously to introduce new products of different criteria’s to capture the large market share.
The 4C's of diamonds
Cut
The cut of the diamond defines its sparkle. The shine of the diamond depends on how well it has been cut and how many facets it has. The better the cut, the better its shine. Because cut is so important, several grading methods have been developed to help consumers determine the cut of a particular diamond.
In general, these grades are: 1. Excellent 2. Very Good 3. Good 4. Fair & Poor
In a poorly cut diamond, the light that enters through the table reaches the facets and then ‘leaks’ out from the sides or bottom of the diamond rather than reflecting back to the eye. Less light reflected back to the eye means less brilliance. A better proportionately faceted diamond, the more the light gets reflected to the viewer’s eye.
Round
Princess
Marquise
Heart
Cushion
Pear
Oval
Emerald
Radiant
Carat
The size of the diamond. One carat is made up of 100 points and 5 carats make one gram. (Keep In Mind: Don’t mix “carat weight” with “karat,” the method of determining the purity of gold.) The process that forms a diamond happens only in very rare circumstances, and typically the natural materials required are found only in small amounts. That means that larger diamonds are uncovered less often than smaller ones. Thus, large diamonds are rare and have a greater value per carat. For that reason, the price of a diamond rises exponentially to its size.
0.25 Ct 4.1 mm
0.33 Ct 4.4 mm
0.50 Ct 5 mm
0.60 Ct 5.3 mm
0.75 Ct 5.7 mm
1.00 Ct 6.4 mm
1.25 Ct 6.9 mm
1.50 Ct 7.3 mm
1.75 Ct 7.7 mm
2.00 Ct 8.1 mm
Clarity
This criterion tells us how the clear the stone is from impurities. Impurities like Crystal (bubbles), Feathers (cracks), Natts (Black inclusion), and etc. If you think about the incredible amount of pressure it takes to create a diamond, it’s no surprise that most diamonds have flaws. Hence a chart is used to measure the clarity of the diamond.
F :Flawless: No internal or external flaws. Extremely rare.
IF :Internally Flawless: no internal flaws, but some surface flaws. Very rare.
VVS1-VVS2 :Very Very Slightly Included (two grades). Minute inclusions very difficult to detect under 10x magnification by a trained gemologist.
VS1-VS2 :Very Slightly Included (two grades). Minute inclusions seen only with difficulty under 10x magnification.
SI1-SI2 :Slightly Included (two grades). Minute inclusions more easily detected under 10x magnification.
I1-I2-I3 :Included (three grades). Inclusions visible under 10x magnification AS WELL AS to the human eye.
FL
IF
VVS1, VVS2
VS1, VS2
SL1
SL2, SL3
I1, I2
I3
Color
“Color” refers to the presence or absence of color in white diamonds. Color is a result of the composition of the diamond, and it never changes over time. The color of a diamond ranges from D to X, D being the whitest shade. Because a colorless diamond, like a clear window, allows more light to pass through it than a colored diamond, colorless diamonds emit more sparkle and fire. The formation process of a diamond ensures that only a few, rare diamonds are truly colorless. Thus the whiter a diamond’s color, the greater its value.
(Keep In Mind: Fancy color diamonds do not follow this rule. These diamonds, which are very rare and very expensive, can be any color from blue to green to bright yellow. They are actually more valuable for their color.)
Colorless
D E F
Near Colorless
G H I J
Faint Yellow
K L M
Very Light Yellow
N O P Q R
Light Yellow
S T U V W X Y Z
Round
Princess
Marquise
Heart
Cushion
Pear
Oval
Emerald
Radiant
0.25 Ct
4.1 mm
0.33 Ct
4.4 mm
0.50 Ct
5 mm
0.60 Ct
5.3 mm
0.75 Ct
5.7 mm
1.00 Ct
6.4 mm
1.25 Ct
6.9 mm
1.50 Ct
7.3 mm
1.75 Ct
7.7 mm
2.00 Ct
8.1 mm
FL
IF
VVS1, VVS2
VS1, VS2
SI1
SI2, SI3
I1, I2
I3
Colorless
D E F
Near Colorless
G H I J
Faint Yellow
K L M
Very Light Yellow
N O P Q R
Light Yellow
S T U V W X Y Z
What is Fluorescence?
Diamond Anatomy
Diameter
The width of the diamond as measured through the girdle. It is measured in millimeters (mm) and roughly comparable to carats. This is sometimes called the girdle diameter. A 1 – carat round diamond is typically 6.5 mm, while a 1.25 – carat round diamond is 6.8 mm.
Table
This is the large, flat top facet of a diamond that is visible when the stone is viewed face up. The average table size is expressed as a percentage of the diamond’s average girdle diameter.
Crown
The upper portion of a cut gemstone, above the girdle. The crown is made up of the table facet, bezel facets, upper girdle facets, and star facets. This is where light enters the diamond and the brilliance begins.
Girdle
The narrow rim of a diamond that separates the crown from the pavilion. It is the largest diameter to any part of the stone.The girdle can have different finishes, including polished, faceted, or bruted. Most girdles are faceted and polished, meaning they consist of several flat facets.
Pavilion
The lower portion of the diamond, below the girdle. It is sometimes referred to as the base. The pavilion is an important part of a diamond’s overall look, as it contains facets that help light bounce, enter, and reflect through the diamond, giving it brilliance and fire.
Culet
The tiny facet on the pointed bottom of the pavilion, which is the portion of a cut gem below the girdle. The culet can be pointed, which is referred to as “no culet”, or it can be a flat surface that is an additional facet to the diamond. Large culets appear like a black dot at the center of the stone.
Depth
The distance between the diamond’s table (top surface) and its culet (bottom tip), measured in millimeters. A diamond with an ideal depth will allow the light to strike each pavilion facet at an angle that allows most of the light to reflect back to the top.
