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Tag Archives: HRD

  • The CARAT WEIGHT of your Diamond

    Our recent posts have covered the 4Cs - the grading standard that diamond grading laboratories such as GIA and HRD use when examining and grading diamonds.

    As a reminder - when purchasing a diamond from My Diamonds you will receive a diamond grading certificate such as the one shown below:~

    THE CARAT WEIGHT OF YOUR DIAMOND
    The certificate covers the 4Cs of diamond grading as we have explained, but will also give you unique information about your diamond.

    We have talked about COLOUR, CUT and CLARITY.  This post is about the last of the 4Cs - CARAT WEIGHT.

    CARAT WEIGHT ~ a carat is the unit of measurement specifically used to determine and describe the weight of a diamond or other precious stone.  The word 'carat' originates from the carob seed, a seed with a uniformity of weight that diamond traders in the past used to use as a counterbalance when weighing gems.

    A single carat is the equivalent of 0.2 grams, and divided into 100 points.  A diamond grading report will measure the weight of a diamond to the nearest 100th of a carat e.g. a 1 carat diamond has 100 points where as a quarter carat stone has 25 points.  In pre-set jewellery diamond weight is divided into fractions and will be graded with their decimal equivalent.  Below is a carat weight grading chart:~

    Many people think that the weight of the diamond is the 'C' that determines value.  This is not so.  If a diamond is of very high quality i.e. the colour, clarity and finish is exemplary then it will be worth more per carat weight.  All of these factors must be taken in to consideration, and an experienced diamond retailer such as My Diamonds, one of Australia's foremost diamond retailers, will guide you to your perfect diamond.

  • The 4Cs ~ The CLARITY of Your Diamond

    In most diamonds there are tiny imperfections - most of which are not obvious to the naked eye, but will be graded by Diamond Clarity Grading carried out by gemologists.  My Diamonds diamonds are graded by GIA or HRD, diamond grading laboratories that provide certification of quality for all of the diamonds My Diamonds offer their customers.

    The clarity grade is the number and size of these tiny imperfections, many of which can only be seen under a microscope, and will in no way affect the beauty of the diamond to the naked eye.

    Diamond laboratories will refer to the imperfections as inclusions, or blemishes.  If you're unsure about your chosen diamond, a My Diamonds professional diamond specialist is always on hand to guide you through diamond clarity grading.  Below is a diagram designed to explain how a diamond is graded:~

    THE 4CS ~ THE CLARITY OF YOUR DIAMOND

    Of course, those with an F - IF grading will be considered a much higher quality stone and therefore a customer will expect to pay more.  At the other end of the scale, an I1 - I3 grading will be a much more affordable stone.  The middle grades are more usual.  If you have any question about diamond clarity, please don't hesitate to call My Diamonds, one of Australia's foremost diamond retailers on 1300 55 66 20, where a diamond specialists will guide you to the diamond that's perfect for you.

  • The 4Cs - The COLOUR of Your Diamond

    In past posts we have talked about the 4Cs of diamond grading and where the grading values are on a Grading Certificate.  For my Diamonds, Australia on of Australia's foremost diamond retailers this is usually carried out by GIA or HRD.  One of the four main characteristics of a diamond is colour - an important consideration when purchasing your diamond.

    At My Diamonds we try to make the distinctions easier to understand before you purchase, and explain why certain colours of diamonds will command higher prices.

    Loose diamonds must be graded before they are mounted or put in a setting.  This is because surrounding colours can permeate the true colour of the stone.  For example a yellow gold setting will make a diamond look less yellow.  A white gold or platinum setting will emphasise colour.

    • G~H~I~J  Nearly colourless
    • K~L~M Faintly tinted, usually yellow
    • N~O~P~Q~R  Lightly tinted, usually yellow.  Tint can be seen with the naked eye
    • S~T~U~V~W~X~Y~Z  Tinted, usually yellow, may progress to brownish.  Tint visible to the naked eye.
    • These grades apply to diamonds that are colourless, or those that are yellow through yellowish brown, as in the above diagram.  They do not apply to fancy coloured diamonds.  Fancy coloured diamonds  have separate colour grading standards.
    • When referring to colour, a grading report will grade a diamond's lack of colour or whiteness.
    • D is the highest colour grade with Z being the lowest

     


    My Diamonds will always ensure you know your diamond before purchase.  Their professional diamond specialists are always on hand to provide information and answers to queries.  My Diamonds will guide you to the diamond of your dreams, whether in a superb pre-designed ring, or an exquisite diamond in a diamond engagement ring of your own design.

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