Checklist To Buy Diamonds In Australia

diamond buying checklist

Diamonds are measured on many factors and after checking most of the below factor’s diamonds can be priced. Sometimes we come across buyers who buy from overseas who has no clue why the diamond is cheap but, just on price point they buy a diamond over the website or buy from overseas market, where after getting in their hand they go for local shops for checking and finds out that the diamond is not exactly what they paid for. So, we need to educate why & what should you look at in your diamond before paying an extremely high price or thinking that you are getting an exceptionally good deal not knowing the compromises you might have made. One more thing I would like to point out that, sometimes it could be a second-hand or stolen or overvalued doggie valuation company. If it is not certified by GIA, IGI, HRD, or any other well-known valuation companies you might be paying over price. 

Following is the checklist for diamond buyers, but keep in mind ultimately you should look at the stones before you buy. Must visit your local shops, ask them to show you some options for your budget and your local jewellers and retailers are your best point of contact as you can go back to them anytime in future, but once you buy it on the internet you might not be able to resolve any issue as much you can do it locally. So, my recommendation is to buy locally in Sydney, Australia. 

Choose Shape

Diamonds comes in many shapes like Round, Princess cut (square), Oval, Emerald, Cushion, Trillion, Baguettes, Tapered Baguettes, Half Moons, Cadillac, Ascher, Marquise, Pear, Radiant, Carre, Old cut, Single Cut, Rose-cut and many more cut these days. As you can see there are already many cuts to choose from, originally there were only round diamonds popular, but now all different shapes are available, and everyone’s need has been served by the great work of our technology. Every cut has its perfection and imperfection just like everything else, for example, Marquise, Oval, Pears these shapes if they are not cut in proportion you might see bow tie in on the face of this diamonds, now Cushion & Radiant cut diamonds might have a look of crushed Ice on the face-up but some people might like that kind of look so put in simple words, everyone is different and that’s why you need to have a look on Diamonds before you buy. Because some of the things are not included in a certificate which you can see with your naked eye.


Choose Size

Diamonds come in every size to fit the design; the measurements are known are carat weight. Bigger the diamond expensive it is. As you can imagine that Miners when they take the stones out from mines it is very hard to bring out in large pieces, but after they come out, they go through lots of processes, and in this process rough has a lot of inclusions, or the shape, out of this Cutters try to get the best quality and shape of diamonds from these so-called roughs, and in this process, most of the material falls in different sizes. So, to find a big chunk of diamond you need very clean and bright rough in large chunks, so to find large rough is rare and that’s why it’s expensive by the size of the weight.

Colour Preferences

Diamonds are graded by Colour on a scale from D to Z, D is colorless, a truly white diamond. Anything up to and including colour “H” is considered white, with the hint of yellow appearing in diamonds grade from “I” onwards. Colourless (white) diamonds are the rarest and therefore the most valuable. Colours like Yellow, Pink, Brown, Grey, Green, Orange, and Blue, Black is very rare and that’s why again they are very expensive. As you all know Pinks, Blue & Red Colour rare and they are the most expensive diamonds. To achieve a similar look but affordable pricing there is a very good solution, they treat them with colour, which is a safe treatment, and they are called “coloured treated diamonds”. Colour treated diamonds are diamonds, but they are treated in high pressure, high temperature. This means they will remain the colour they have been given for a lifetime unless, they are heated in extreme heat (burned) in live fire so that they can come back in their original colour

diamond colour chart

Choose Clarity

The clarity grade refers to naturally occurring flaws, known as “Inclusions” Within the diamond. VVS Stands for very very slight inclusions, VS means Very Slight, SI means Slightly included, and “I” means included. Inclusions interrupt the flow of light in the diamond. Which mean included diamond sparkle less than flawless (IF) ones. But diamonds with clarity grades up to SI2 should not have inclusions that can be seen with the naked eye. 

diamond clarity chart

Diamond’s Polish

When Diamond in it’s rough form, first it takes it’s shape, and to finalize the rough into a finished product polishing is one of the many processes, just like marble, when they are in their rough form the surface is uneven & Rough, once it’s polished it has smooth look & Brilliance which can allow light to reflect better from stone. Valuers gives their verdict by defining the quality of polish, by grading it like Excellent, Very Good, Good, Fair or Poor. Polishing is a very skillful job if not done by experts it could have polishing marks known as Nick, burn marks, Rough girdle, Scratch, Abrasion, Pit, Lizard Skin, which is mostly mentioned on valuation certification.

Diamond’s Symmetry

Symmetry meaning the structure of the diamond’s proportion, symmetry alteration that affects the alignment and balance of a diamond’s facet structure is considered a proportioning flaw. Diamonds don’t need to be always symmetrical, as much as anyone tries to cut the diamond in symmetrical proportion, it also depends on how the original rough is, for example, while cutting the diamond trying not to loos too much weight and try to avoid inclusions, in this process symmetry could be compromised. Valuers use grading of symmetry by defining as Excellent, Very Good, Good, Fair or Poor. Following are some of the examples where we can notice some of the flaws in diamond’s symmetry.

diamond polish and symmetry chart
  • Off Girdle – Diamond appears to be off-round and may have squared-off areas.
  • Misshapen Facets – Unequal size & Shape of the facets.
  • Off-center table – The table facet does not appear centralized on the crown view.
  • Off-center culet – From the face-up view, the point where pavilion mains meet is not centralized correctly.
  • Wavy girdle – Instead of having consistency, the girdle takes on a wave-like appearance.
  • Pavilion angle variation – Significant variation of the 8 measured pavilion angles.
  • Crown angle variation – Significant variation of the 8 measured crown angles.
  • Girdle thickness variation – Variations in girdle thickness around the diamond’s rim.

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