How to read certificate

Summery Number : Refers to Certificate Number

Description of Article: Includes Type of Article, Gross Weight of Jewellery, Net Weight of Jewellery, Colour of Gold, Karat Weight of Gold, Number of Diamonds, Carat Weight of Diamonds

Cut :  The criteria by which a polished diamond is graded for its proportions, facet angles and overall symmetry as compared with those of the ideal cut ( e.g. Scan DN or T olkowsky proportions). Also called the Diamond’s make. Antique cut ( cushion ), brilliant cut ( round, marquise / navette, oval pear – shape) , baguette, cabochon, emerald cut, rose cut and scissors cut.

Est. Total Weight : refers to total Diamond Weight

Colour : GII defines colour grade of diamond by comparing with CIBJO Master stone set using  light source of 5500 Kelvin

GIA CIBJO DESCRIPTION
D Exceptional White + Colourless
E Exceptional White
F Rare White Near Colourless
G Rare White
H White
I Slightly tinted white Faint Colour
J Slightly tinted white
K Tinted White
L Tinted White
M-Z Tinted Very light to light colour

 

Finish : Refers to the excellence of polish, freedom from external flaws and overall symmetry of a faceted diamond. Sometimes classified as the diamond’s external clarity.

Diamond Grading Report

Refers to Certificate Number, It is a unique number given to each certificate. To trace the certificates this number is the only source.

Date on which the stone is tested and issued.

Refers to total Diamond Weight

GII defines colour grade of diamond by comparing with international colour grading standards, using light source of 6500 Kelvin.

International Standard of colour Grading.

GIA (USA) CIBJO (Europe) DESCRIPTION
D Exceptional White + Colourless
E Exceptional White
F Rare White Near Colourless
G Rare White
H White
I Slightly tinted white Faint Colour
J Slightly tinted white
K Tinted White
L Tinted White
M-Z Tinted Very light to light colour
 Clarity of a diamond graded by 10 x magnification by an achromatic  &  an aplanatic loupe.

FL/ IF or Loupe Clean: Free from Internal as well as External Clarity characteristics/Free from internal characteristics inclusions ( Internally flawless)

VVS : Very, very small inclusions

(VVS1, VVS2)

VS: Very small inclusions

(VS1, VS2)

SI: Small inclusions

(SI1 , SI2)

I1: Internal Characteristics/inclusions which are       prominent

I2: Internal Characteristics/inclusions which are very prominent

I3: Internal characteristics/inclusions which are extremely prominent.

The cutting style in which polish of Diamond is faceted for eg. RBC, Pear, Marquis, Baguette, Princess etc.

Dimensions in Millimeters (length × Width × total depth in mm)

1. Height: Overall height divided by breadth or average diameter
2. Table: Width of table divided by breadth or average diameter.

Finish is the excellence of polish, external flaws and overall symmetry of a faceted diamond.
1. Polish: Surface finishing of a Diamond
2. Symmetry: The correct facet alignment & overall balance and Proportions of a polished Diamond

Girdle is the diameter of a diamond, dividing the crown above from the pavilion below. This gives the gem a higher measure of transparency.

Graded according to strength and colour of the fluorescence under U.V.light.

Details of Characteristic of the stone not shown on diagram or not covered by the above entries.

The red symbol denotes internal characteristic. Green symbol denotes external characteristics. Symbols indicate natural and position of the Characteristic inclusions not necessary their size.

diamond

Jewellery Identification Report

Refers to Certificate Number, It is a unique number given each certificate. To trace the certificates this number is the only source.

Describes the Type of Article, Gross Weight of Jewellery, Net Weight of Gemstones, Colour of Gold, Karat Weight of Gold, Number, and Shape of Diamonds. Est. Total Weight of Diamonds.

The cutting Style in which a polished Diamond is faceted . for e.g. RBC, Pear, Marquis, Baguette, Princess etc.

GII defines colour grade of diamond by comparing with international colour grading system set,  using  light source of 6500 Kelvin

International Standard of colour Grading.

GIA CIBJO DESCRIPTION
D Exceptional White + Colourless
E Exceptional White
F Rare White Near Colourless
G Rare White
H White
I Slightly tinted white Faint Colour
J Slightly tinted white
K Tinted White
L Tinted White
M-Z Tinted Very light to light colour

Clarity of a diamond graded by 10 x magnification as well achromatic, aplantic loup

FL/ IF or Loupe Clean: Free from Internal as well as External Clarity Characteristics/Free from internal characteristics inclusions ( Internally flawless)

VVS: Very, very small inclusions

VS: Very small inclusions

SI: Small inclusions

I: Internal Characteristics/inclusions which are prominent

Refers to the excellence of polish external flaws and overall symmetry of a faceted diamond.

identification-report

Gemstone Report

Certificate Printing Date

Refers to Certificate Number, It is a unique number given each certificate. To trace the certificates this number is the only source

Gemstones are weighed in Carats, The conversion of carats is :  1ct = 100cents ; 5cts = 1 gram)

Stones which are not set in a Jewellery is called unmounted, Whereas stones which are set in Jewellery are called mounted.

The visual appearance of the colour of the Gemstones, such as Green, red, etc are indicated

Gemstones are fashioned (cut) in different shapes. The Common shapes are Octagon, Emerald or Step cut, Oval, Cushion, fancy, mix cut etc.

The dimensions are measured by using a gauge indicating (Length × Width × Height)  measured in millimeter (mm) size.

Name of the advanced instruments on which test is performed.

Indicates any extra information to be mentioned about the gemstone.

Indicates identification of Gemstones as to whether they are natural, synthetic or imitation gemstone.

Diamond: Heat and Irradiation, Laser Drilling, Fracture filling HPHT.

Emerald: Dyeing, Coating, Oiling and  Resin filling.

Ruby: Dyeing, Heating, fracture filling with Lead (pb) glass, Bismuth, Borax, Beryllium – diffusion.

Sapphire: Dyeing, heating, Diffusion with Beryllium & Titanium, fracture filling with Lead (pb) glass & cobalt, Irradiation.

Validates Country of Origin of Gemstones such as Ruby, Emerald, and Sapphire.