All You Need to Know About Buying Diamonds for Engagement Rings

Buying a diamond for an engagement ring or other jewellery piece is often a daunting task and a topic that many are not clued up on. Hopefully this short guide to buying diamonds will help you with the diamond choices you make.

how to buy diamonds

Firstly, a diamonds prices is determined by four characteristics of a diamond – cut, clarity, colour and carat weight known as the 4c’s of a diamond. Understanding a diamonds characteristics will not only teach you how to buy a diamond, it will determine the diamonds appearance and sparkle. If you understand the ‘4c’s of a diamond’ you will have no problem finding the perfect diamond that also matches your budget. Diamond Cut The diamond cut determines the diamonds sparkle and how it shines. It’s important to remember that the cut of the diamond does not refer to the diamond shape. The diamond cut refers to the diamonds reflective qualities and light performance. The diamond cut is considered to be the most important characteristic out of the four. If a diamond is well cut light will enter the top travelling to the side pavilion where it reflects from one side to the other and then reflects back out the top of the diamond giving it the maximum brilliance and sparkle. Diamond Cut grading Chart Here are the main cutting grades Ideal Cut – Maximum sparkle and light reflection for a finer diamond. Deep Cut – A good amount of light reflection and brilliance. Good Cut – The diamond will reflect some of the light that enters it. The arrows in the diagram show the ligh reflecting out of the different diamond cuts.

Diamond Cut diagram

Diamond Colour If you want the top colour in a white diamond the grading starts from completely colourless. If a white diamond has a tint of yellow it will receive a lower quality grading due to chemical impurities contained inside the diamond. A whiter diamond will reflect more light and have a more brilliant sparkle and the more colour different variations it will reflect back.

diamond colour chart

Diamond Colour Chart

Diamond Clarity Diamond clarity in a diamond refers to the measurement of flaws or blemishes a diamond contains, whether it is an inclusion, air bubbles, non diamond minerals found in the diamond or a crack in the diamond. Diamond Clarity grading starts with F – which iscompletely flawless both internally and externally. The chart below shows the how clarity is graded i a diamond with the marks showing the flaws.

diamond clarity chart

Diamond Clarity Chart

Diamond Carat Weight A carat is the weight measurement of a diamond. One carat is equivalent to 200 milligrams or 0.2 grams and known in the industry as 100 points. A diamond carat weight is the most obvious factor to determine the value of a diamond. When choosing a diamond with a set budget its about balancing the size of the diamond carat weight with the quality of the diamond cut, clarity and colour. If you are on a strict budget and you want a larger diamond go for a higher carat weight but if you are want more quality, balance out the carat weight with the diamonds cut, clarity and colour. Diamond Shape Remember diamonds come in different shapes. Round brilliant shaped diamonds and princess cut diamond shape are popular choices for engagement rings. Here are the different diamond shapes. diamond shapes Certified Diamonds Only buy diamonds with a certificate. When buying a diamond for a engagement ring, eternity ring and other diamond set jewellery is important that the diamond comes with a certificate documenting its cut, clarity, carat weight, colour and exact measurements – giving a detailed diagram of the diamond. A diamond certificate should always be given by an independent laboratory otherwise it may be a false document of the diamond actual grades and value – the most renowned diamond laboratory is GIA (Gemmological Institute of America)


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