Education

Certification

Before purchasing a diamond, it is important to scrutinize your diamond’s certificate to verify that it has been assessed fairly and professionally.

Diamond Certification

A diamond is evaluated, measured, and inspected, with the help of standard tools, similar to a jeweller’s loupe and microscope. Post this evaluation, gemologists create a certificate, also known as Diamond Grading Report or Diamond Quality Document. The report lists the diamond’s clarity, colour, polish, symmetry and other distinguishing characteristics. In case of round diamonds, the report includes specifications on its cut grade as well.

Importance of diamond certification

  • Not all buyers are experts in gauging a diamond’s quality
  • A certificate will validate the superiority and authenticity of the diamond
  • A certificate will ensure you a fair price, should you decide to sell your diamond

Certificates provided by Kama for loose diamonds

  • GIA Diamond Grading Report
  • GIA Diamond Dossier
  • IGI Certification

Certificates provided by Kama for loose diamonds

  • IGI
  • GSI
  • SGL
  • EGL
  • DGLA

1. Gia Diamond Granding Report

The Diamond Grading Report is issued by the Gemological Institute of America (GIA). The GIA set the standard for diamond grading and gemological identification. GIA reports represent the highest standard of reliability, consistency and integrity. Elements of a GIA Diamond Grading Report:

  • Date: The date of issue of the GIA report, post the examination of the diamond
  • GIA Report Number: Unique GIA Identification Number registered with GIA
  • Shape and Cutting Style: Description of the diamond’s outline (shape), and its cutting style that defines its facet arrangement
  • Measurements:
    For round diamonds: minimum diameter – maximum diameter x depth
    For fancy shaped diamonds: length x width x depth
  • Carat Weight: The weight of the diamond listed to the nearest hundredth of a carat
  • Colour Grade: Grade which determines the absence of color in a diamond
  • Clarity Grade: Clarity assessed under 10X magnifying glass to study its inclusions (internal characteristics) and blemishes (external characteristics)
  • Cut Grade: Grade which determines the cut being perfect to average, considering face-up appearance, design and craftsmanship
  • Polish: The diamond’s overall exterior, in terms of its smoothness, rated from excellent to poor
  • Symmetry: Placement and alignment of the diamond’s facets, and balanced proportion of its outer shape
  • Fluorescence: Potency and colour of the diamond when observed under a long-wave ultra violet light
  • Inscriptions: Potency and colour of the diamond when observed under a long-wave ultra violet light
  • Comments: Additional identifying characteristics of the diamond, which were not included in the report
  • Proportion Diagram: Shows a map of diamond’s actual properties
  • Clarity Characteristics: Shows a map of the approximate size, type & position of inclusions as viewed under a microscope
  • GIA Colour and Clarity Scales: The grading scale graphics of GIA Clarity and Colour with the relative positions of colour and inclusions in the GIA Diamond Grading System

2. Gia Diamond Dossier

A Diamond Dossier is issued by the Gemological Institute of America (GIA). The Diamond Dossier is a special report issued for diamonds under 1 carat

Element of a Gia Dossier

  • Date: The date of issue of the GIA report, post the examination of the diamond
  • GIA Report Number: Unique GIA Identification Number registered with GIA
  • Date: The date of issue of the GIA report, post the examination of the diamond
  • Shape and Cutting Style: Description of the diamond’s outline (shape), and its cutting style that defines its facet arrangement
  • Measurements:
    For round diamonds: minimum diameter – maximum diameter x depth
    For fancy shaped diamonds: length x width x depth
  • Carat Weight: The weight of the diamond listed to the nearest hundredth of a carat
  • Colour Grade: Grade which determines the absence of color in a diamond
  • Clarity Grade: Clarity assessed under 10X magnifying glass to study its inclusions (internal characteristics) and blemishes (external characteristics)
  • Cut Grade: Grade which determines the cut being perfect to average, considering face-up appearance, design and craftsmanship
  • Polish: The diamond’s overall exterior, in terms of its smoothness, rated from excellent to poor
  • Symmetry: Placement and alignment of the diamond’s facets, and balanced proportion of its outer shape
  • Fluorescence: Potency and colour of the diamond when observed under a long-wave ultra violet light
  • Inscriptions:Customers may request the purchased diamond to be marked with its unique GIA Report Number, with a micro laser
  • Comments: Additional identifying characteristics of the diamond, which were not included in the report
  • Proportion Diagram: Shows a map of diamond’s actual properties
  • Clarity Characteristics: Lists the type of inclusions
  • GIA Colour, Clarity & Cut Scales: The grading scale graphics of GIA Clarity and Colour with the relative positions of colour and inclusions in the GIA Diamond Grading System

3. International Gemological Institute (IGI)

IGI Diamond Reports give an accurate assessment of a diamond's cut, color, clarity and carat weight according to strict international standards.

Element of The IGI Diamond Report

  • Number: An unique identification number (IGI Report ID), registered in the IGI worldwide database, available on the Online Data Retrieval Page of IGI website
  • Date: The date on which the report was issued
  • Description: Validation of the diamond’s material and origin.
  • Shape & Cut: Shape is the outline form of the diamond and Cut is the style of faceting
  • Carat Weight:Weight of the diamond expressed in terms of carat, with is 1/5th of a gram (0.20gms)
  • Colour Grade: Based on comparison with IGI master set of diamonds, graded colourless to tinted
  • Clarity Grade: Size, number, location of internal & external characteristics (inclusions & blemishes)
  • Cut Grade: Finish and proportions that influence the overall appearance of a diamond
  • Polish: Smoothness of the facets
  • Symmetry: Symmetrical arrangements of facets and various parts of the stone
  • Measurements:
    For round diamonds: minimum diameter – maximum diameter x depth
    For fancy shaped diamonds: length x width x depth
  • Table: The largest facet in a diamond with its size expressed in percentage (100% = average of minimum and maximum diameter)
  • Crown Height-Angle:The conical shaped lower part of a diamond, measured in percentage as well as degrees
  • Pavillion Height-Angle: Additional identifying characteristics of the diamond, which were not included in the report
  • Girdle Thickness: Part between the crown and the pavilion, expressed ranging from extremely thin to extremely thick
  • Culet: The tip of the diamond
  • Crown & Pavillion Diagram: Reaction of the stone when exposed to long wave ultraviolet light
  • Fluorescence:This will have inclusions and blemishes plotted on the crown and pavilion in various colours