The purpose of the diamond certificate is to protect
consumers from purchasing falsely-claimed diamonds perceived to be a certain
value.In today’s diamond market, it’s
easy for retailers to con individuals into buying good quality diamonds.The average person is not armed with the
proper facts and skills to distinguish good diamonds from the rest.
An independent Gemological Laboratory issues the diamond certificate.During the evaluation, expert graders
examine the jewel.They employ various
geological instruments and determine the characteristics of the diamond in the
certificate.The various
characteristics in the certificate contain which gemological instruments were
employed to observe the diamond properties.As such, the diamond evaluation is essential to the pricing because any
slight flaw may affect the stone’s worth.
There are two organizations that are well known diamond certifiers: GIA and the
IGI.Both of these organizations are
independent laboratories more than qualified to evaluate and certify the
diamond.The following is a partial
list of the contents of the diamond certificate.
Certificate Number
Each laboratory provides a certificate number.This is the number that certifies the diamonds uniquely.The institution will archive a copy of the
certificate so that they can reissue, if it’s lost.
Cut and Shape
There are various shapes such as Heart, Oval, Round and Pear.Additionally, shapes could be in the forms
of Brilliant, Emerald, Princess and Marquise.
Proportions
Proportions of the diamond include depth and table.Depth represents the actual depth of the diamond.The table represents the largest facet of
the diamond, sometimes the center piece or main facet.Each
of these items is measured by percentages.
Measurements
The diamond is measured by the millimeter through a measuring instrument.The dimensions are commonly dubbed as
“maximum-minimum x depth".
Carat size
When diamonds are weighed, they are measured by the carat to the thousandth.One carat is roughly 1/142nd once.The word carat originates from a practice of
measuring a carob seed in India.
Girdles Found at the Edge of the diamond
The girdle runs between the crown and the diamond’s bottom.The thickness of a girdle is usually
described by a range, because it could vary in the thickness.
Clarity
Clarity is determined by the dimensions of the inclusions and/or irregularities
of the item.With the help of an IGI
microscope, the grader can examine the qualities of the diamond clarity.Grading of the clarity could have listings
such as ‘VVS’, ‘SI’ and ‘I’.
Plot
The plot provides data about the uniqueness of the diamond.Like fingerprints, the plot has every
characteristic of the diamonds imperfections and physical measurements.With this data, a buyer could verify through
the grader (or lab) that the diamond is the right one.The plot is usually plotted in graph format.
Cutlet
The “pointy" facet of the lower of part of the diamond is called a Cutlet.The purpose of the cutlet is to prevent
unwanted chipping.Note that some
diamonds do not have cutlets.
Color
Under precise lighting, the colors of a diamond can fall under categories of D
to Z, D being the highest grade.The
colors are determined by comparing the subject diamond with excellent graded
diamonds.
Disclaimer: All information on this site is provided for informational purposes only! By no means is any
information presented herein intended to substitute for the advice provided to you by any health care or other professional
or organization.
